Finding the Third Proportional to 152,620.50 and 331,505

Step by Step Solution

1. Step 1: Write the proportion equation
   152,620.50 : 331,505 = 331,505 : x
2. Step 2: Convert to fraction form
   152,620.50/331,505 = 331,505/x
3. Step 3: Cross multiply
   152,620.50x = 331,505 × 331,505
4. Step 4: Simplify right side
   152,620.50x = 109,895,565,025
5. Step 5: Solve for x
   x = 109,895,565,025/152,620.50
6. Step 6: Final answer
   x = 720,057.69