Finding the Third Proportional to 140,493 and 331,639.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,493 : 331,639.50 = 331,639.50 : x
2. Step 2: Convert to fraction form
   140,493/331,639.50 = 331,639.50/x
3. Step 3: Cross multiply
   140,493x = 331,639.50 × 331,639.50
4. Step 4: Simplify right side
   140,493x = 109,984,757,960.25
5. Step 5: Solve for x
   x = 109,984,757,960.25/140,493
6. Step 6: Final answer
   x = 782,848.67