Finding the Third Proportional to 287,002.50 and 626,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,002.50 : 626,459.50 = 626,459.50 : x
2. Step 2: Convert to fraction form
   287,002.50/626,459.50 = 626,459.50/x
3. Step 3: Cross multiply
   287,002.50x = 626,459.50 × 626,459.50
4. Step 4: Simplify right side
   287,002.50x = 392,451,505,140.25
5. Step 5: Solve for x
   x = 392,451,505,140.25/287,002.50
6. Step 6: Final answer
   x = 1,367,414.94