Finding the Third Proportional to 621,705 and 928,706

Step by Step Solution

1. Step 1: Write the proportion equation
   621,705 : 928,706 = 928,706 : x
2. Step 2: Convert to fraction form
   621,705/928,706 = 928,706/x
3. Step 3: Cross multiply
   621,705x = 928,706 × 928,706
4. Step 4: Simplify right side
   621,705x = 862,494,834,436
5. Step 5: Solve for x
   x = 862,494,834,436/621,705
6. Step 6: Final answer
   x = 1,387,305.61