Finding the Third Proportional to 861,675 and 1,840,638

Step by Step Solution

1. Step 1: Write the proportion equation
   861,675 : 1,840,638 = 1,840,638 : x
2. Step 2: Convert to fraction form
   861,675/1,840,638 = 1,840,638/x
3. Step 3: Cross multiply
   861,675x = 1,840,638 × 1,840,638
4. Step 4: Simplify right side
   861,675x = 3,387,948,247,044
5. Step 5: Solve for x
   x = 3,387,948,247,044/861,675
6. Step 6: Final answer
   x = 3,931,816.81