Finding the Third Proportional to 99,632 and 215,545

Step by Step Solution

1. Step 1: Write the proportion equation
   99,632 : 215,545 = 215,545 : x
2. Step 2: Convert to fraction form
   99,632/215,545 = 215,545/x
3. Step 3: Cross multiply
   99,632x = 215,545 × 215,545
4. Step 4: Simplify right side
   99,632x = 46,459,647,025
5. Step 5: Solve for x
   x = 46,459,647,025/99,632
6. Step 6: Final answer
   x = 466,312.50