Finding the Third Proportional to 152,553.75 and 315,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   152,553.75 : 315,715.50 = 315,715.50 : x
2. Step 2: Convert to fraction form
   152,553.75/315,715.50 = 315,715.50/x
3. Step 3: Cross multiply
   152,553.75x = 315,715.50 × 315,715.50
4. Step 4: Simplify right side
   152,553.75x = 99,676,276,940.25
5. Step 5: Solve for x
   x = 99,676,276,940.25/152,553.75
6. Step 6: Final answer
   x = 653,384.64