Finding the Third Proportional to 152,981 and 331,385

Step by Step Solution

1. Step 1: Write the proportion equation
   152,981 : 331,385 = 331,385 : x
2. Step 2: Convert to fraction form
   152,981/331,385 = 331,385/x
3. Step 3: Cross multiply
   152,981x = 331,385 × 331,385
4. Step 4: Simplify right side
   152,981x = 109,816,018,225
5. Step 5: Solve for x
   x = 109,816,018,225/152,981
6. Step 6: Final answer
   x = 717,840.90