Finding the Third Proportional to 399,424.50 and 868,833

Step by Step Solution

1. Step 1: Write the proportion equation
   399,424.50 : 868,833 = 868,833 : x
2. Step 2: Convert to fraction form
   399,424.50/868,833 = 868,833/x
3. Step 3: Cross multiply
   399,424.50x = 868,833 × 868,833
4. Step 4: Simplify right side
   399,424.50x = 754,870,781,889
5. Step 5: Solve for x
   x = 754,870,781,889/399,424.50
6. Step 6: Final answer
   x = 1,889,896.04