Optimum Size of Business Organization:
The optimum size of a business organization refers to the most efficient and effective size at which the organization can operate to maximize its productivity and minimize its costs. It is the size that allows the organization to achieve its objectives without facing any significant inefficiencies.

Factors Influencing Optimum Size:
Several factors influence the optimum size of a business organization, including economies of scale, market conditions, technological advancements, and management capabilities. Achieving the optimum size helps an organization to maintain competitiveness, enhance profitability, and sustain growth in the long run.

Steps for the Establishment of a Business Organization:
The establishment of a business organization involves several steps that need to be carefully planned and executed. These steps include:

1. Identifying Business Opportunity: The first step is to identify a viable business opportunity by analyzing market trends, consumer preferences, and competition. This involves conducting market research and feasibility studies to assess the potential demand and profitability of the business idea.

2. Formulating a Business Plan: Once a business opportunity is identified, a comprehensive business plan needs to be formulated. This plan outlines the organization's goals, strategies, financial projections, and operational procedures. It helps in securing investors and serves as a roadmap for the future.

3. Raising Capital: After formulating a business plan, the next step is to raise the necessary capital to finance the establishment of the organization. This can be done through various sources such as personal savings, bank loans, venture capital, crowdfunding, or partnerships.

4. Legal Formalities: The organization needs to comply with legal formalities and obtain the necessary licenses and permits to operate legally. This includes registering the business entity, obtaining tax identification numbers, and fulfilling any industry-specific regulatory requirements.

5. Setting Up Infrastructure: The organization needs to set up its physical infrastructure, including office space, production facilities, and technology infrastructure. This involves acquiring or leasing the necessary premises, purchasing equipment and machinery, and implementing information systems.

6. Recruitment and Training: The next step is to recruit and train the required workforce. This involves defining job roles, conducting recruitment processes, interviewing candidates, and providing them with the necessary training to perform their duties effectively.

7. Marketing and Promotion: Once the organization is ready to operate, it needs to develop a marketing and promotion strategy to create awareness and attract customers. This involves developing a brand identity, creating marketing materials, and implementing advertising and promotional campaigns.

8. Commencement of Operations: Finally, the organization can commence its operations and start delivering products or services to its customers. This requires effective management of resources, efficient production processes, and continuous monitoring of performance to ensure the organization's success.

Overall, the establishment of a business organization requires careful planning, strategic decision-making, and effective execution of various steps. It is essential to consider market conditions, financial viability, legal requirements, and operational capabilities to ensure the organization's long-term success.