Finding the Third Proportional to 556,915.50 and 868,644

Step by Step Solution

1. Step 1: Write the proportion equation
   556,915.50 : 868,644 = 868,644 : x
2. Step 2: Convert to fraction form
   556,915.50/868,644 = 868,644/x
3. Step 3: Cross multiply
   556,915.50x = 868,644 × 868,644
4. Step 4: Simplify right side
   556,915.50x = 754,542,398,736
5. Step 5: Solve for x
   x = 754,542,398,736/556,915.50
6. Step 6: Final answer
   x = 1,354,859.76