Finding the Third Proportional to 868,644 and 1,253,124

Step by Step Solution

1. Step 1: Write the proportion equation
   868,644 : 1,253,124 = 1,253,124 : x
2. Step 2: Convert to fraction form
   868,644/1,253,124 = 1,253,124/x
3. Step 3: Cross multiply
   868,644x = 1,253,124 × 1,253,124
4. Step 4: Simplify right side
   868,644x = 1,570,319,759,376
5. Step 5: Solve for x
   x = 1,570,319,759,376/868,644
6. Step 6: Final answer
   x = 1,807,782.89