Finding the Third Proportional to 287,350.50 and 624,486

Step by Step Solution

1. Step 1: Write the proportion equation
   287,350.50 : 624,486 = 624,486 : x
2. Step 2: Convert to fraction form
   287,350.50/624,486 = 624,486/x
3. Step 3: Cross multiply
   287,350.50x = 624,486 × 624,486
4. Step 4: Simplify right side
   287,350.50x = 389,982,764,196
5. Step 5: Solve for x
   x = 389,982,764,196/287,350.50
6. Step 6: Final answer
   x = 1,357,167.52