Finding the Third Proportional to 8,041.78 and 12,772.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,041.78 : 12,772.69 = 12,772.69 : x
2. Step 2: Convert to fraction form
   8,041.78/12,772.69 = 12,772.69/x
3. Step 3: Cross multiply
   8,041.78x = 12,772.69 × 12,772.69
4. Step 4: Simplify right side
   8,041.78x = 163,141,545.97
5. Step 5: Solve for x
   x = 163,141,545.97/8,041.78
6. Step 6: Final answer
   x = 20,286.74