Finding the Third Proportional to 399,352.50 and 868,674

Step by Step Solution

1. Step 1: Write the proportion equation
   399,352.50 : 868,674 = 868,674 : x
2. Step 2: Convert to fraction form
   399,352.50/868,674 = 868,674/x
3. Step 3: Cross multiply
   399,352.50x = 868,674 × 868,674
4. Step 4: Simplify right side
   399,352.50x = 754,594,518,276
5. Step 5: Solve for x
   x = 754,594,518,276/399,352.50
6. Step 6: Final answer
   x = 1,889,545.00