Finding the Third Proportional to 152,977.50 and 331,379

Step by Step Solution

1. Step 1: Write the proportion equation
   152,977.50 : 331,379 = 331,379 : x
2. Step 2: Convert to fraction form
   152,977.50/331,379 = 331,379/x
3. Step 3: Cross multiply
   152,977.50x = 331,379 × 331,379
4. Step 4: Simplify right side
   152,977.50x = 109,812,041,641
5. Step 5: Solve for x
   x = 109,812,041,641/152,977.50
6. Step 6: Final answer
   x = 717,831.33