Identifying the pattern:
To find the wrong number in the given sequence, we need to identify the pattern followed by the numbers. Let's analyze the given sequence:

3, 6, 9, 22.5, 67.5, 236.25, 945

Step 1: Doubling the previous number
We can observe that the sequence starts with 3 and each subsequent number is obtained by doubling the previous number. Let's check if this pattern holds true for the given sequence:

3 * 2 = 6
6 * 2 = 12 (incorrect)
9 * 2 = 18 (incorrect)
22.5 * 2 = 45
67.5 * 2 = 135
236.25 * 2 = 472.5 (incorrect)
945 * 2 = 1890

As we can see, the third number (12) and the sixth number (472.5) do not follow the pattern of doubling the previous number.

Step 2: Correcting the error
Let's correct the error and find the correct numbers for the third and sixth positions based on the pattern:

The third number should be: 9 * 2 = 18 (instead of 12)
The sixth number should be: 67.5 * 2 = 135 (instead of 472.5)

Corrected sequence:
3, 6, 9, 18, 67.5, 236.25, 945

Step 3: Identifying the actual pattern
Now, let's analyze the corrected sequence to find the pattern:

3 * 2 = 6
6 * 3 = 18
18 * 3 = 54
54 * 4.5 = 243
243 * 4.5 = 1093.5

Step 4: Multiplying by the next odd number
From the corrected sequence, we can observe that each number is obtained by multiplying the previous number by the next odd number in the sequence (starting from 3). Let's check if this pattern holds true for the given sequence:

3 * 2 = 6
6 * 3 = 18
18 * 5 = 90 (incorrect)
54 * 5 = 270 (incorrect)
243 * 7 = 1701 (incorrect)
1093.5 * 7 = 7654.5 (incorrect)

Incorrect numbers:
Based on the analysis, the incorrect numbers in the given sequence are: 90, 270, 1701, 7654.5

Conclusion:
The wrong numbers in the given sequence are: 90, 270, 1701, and 7654.5. These numbers do not follow the pattern of multiplying the previous number by the next odd number.