Finding the Third Proportional to 285,732 and 627,870

Step by Step Solution

1. Step 1: Write the proportion equation
   285,732 : 627,870 = 627,870 : x
2. Step 2: Convert to fraction form
   285,732/627,870 = 627,870/x
3. Step 3: Cross multiply
   285,732x = 627,870 × 627,870
4. Step 4: Simplify right side
   285,732x = 394,220,736,900
5. Step 5: Solve for x
   x = 394,220,736,900/285,732
6. Step 6: Final answer
   x = 1,379,687.04