Finding the Third Proportional to 677,320 and 928,792

Step by Step Solution

1. Step 1: Write the proportion equation
   677,320 : 928,792 = 928,792 : x
2. Step 2: Convert to fraction form
   677,320/928,792 = 928,792/x
3. Step 3: Cross multiply
   677,320x = 928,792 × 928,792
4. Step 4: Simplify right side
   677,320x = 862,654,579,264
5. Step 5: Solve for x
   x = 862,654,579,264/677,320
6. Step 6: Final answer
   x = 1,273,629.27