Finding the Third Proportional to 331,785 and 725,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,785 : 725,662.50 = 725,662.50 : x
2. Step 2: Convert to fraction form
   331,785/725,662.50 = 725,662.50/x
3. Step 3: Cross multiply
   331,785x = 725,662.50 × 725,662.50
4. Step 4: Simplify right side
   331,785x = 526,586,063,906.25
5. Step 5: Solve for x
   x = 526,586,063,906.25/331,785
6. Step 6: Final answer
   x = 1,587,130.41