Finding the Third Proportional to 8,920.13 and 12,151.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.13 : 12,151.69 = 12,151.69 : x
2. Step 2: Convert to fraction form
   8,920.13/12,151.69 = 12,151.69/x
3. Step 3: Cross multiply
   8,920.13x = 12,151.69 × 12,151.69
4. Step 4: Simplify right side
   8,920.13x = 147,663,509.10
5. Step 5: Solve for x
   x = 147,663,509.10/8,920.13
6. Step 6: Final answer
   x = 16,553.97