Finding the Third Proportional to 331,740 and 500,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,740 : 500,359.50 = 500,359.50 : x
2. Step 2: Convert to fraction form
   331,740/500,359.50 = 500,359.50/x
3. Step 3: Cross multiply
   331,740x = 500,359.50 × 500,359.50
4. Step 4: Simplify right side
   331,740x = 250,359,629,240.25
5. Step 5: Solve for x
   x = 250,359,629,240.25/331,740
6. Step 6: Final answer
   x = 754,686.29