Finding the Third Proportional to 394,870 and 610,762

Step by Step Solution

1. Step 1: Write the proportion equation
   394,870 : 610,762 = 610,762 : x
2. Step 2: Convert to fraction form
   394,870/610,762 = 610,762/x
3. Step 3: Cross multiply
   394,870x = 610,762 × 610,762
4. Step 4: Simplify right side
   394,870x = 373,030,220,644
5. Step 5: Solve for x
   x = 373,030,220,644/394,870
6. Step 6: Final answer
   x = 944,691.22