Finding the Third Proportional to 516,303 and 725,785.50

Step by Step Solution

1. Step 1: Write the proportion equation
   516,303 : 725,785.50 = 725,785.50 : x
2. Step 2: Convert to fraction form
   516,303/725,785.50 = 725,785.50/x
3. Step 3: Cross multiply
   516,303x = 725,785.50 × 725,785.50
4. Step 4: Simplify right side
   516,303x = 526,764,592,010.25
5. Step 5: Solve for x
   x = 526,764,592,010.25/516,303
6. Step 6: Final answer
   x = 1,020,262.50