Finding the Third Proportional to 815,566 and 1,842,638

Step by Step Solution

1. Step 1: Write the proportion equation
   815,566 : 1,842,638 = 1,842,638 : x
2. Step 2: Convert to fraction form
   815,566/1,842,638 = 1,842,638/x
3. Step 3: Cross multiply
   815,566x = 1,842,638 × 1,842,638
4. Step 4: Simplify right side
   815,566x = 3,395,314,799,044
5. Step 5: Solve for x
   x = 3,395,314,799,044/815,566
6. Step 6: Final answer
   x = 4,163,139.22