Finding the Third Proportional to 644,554 and 1,403,802

Step by Step Solution

1. Step 1: Write the proportion equation
   644,554 : 1,403,802 = 1,403,802 : x
2. Step 2: Convert to fraction form
   644,554/1,403,802 = 1,403,802/x
3. Step 3: Cross multiply
   644,554x = 1,403,802 × 1,403,802
4. Step 4: Simplify right side
   644,554x = 1,970,660,055,204
5. Step 5: Solve for x
   x = 1,970,660,055,204/644,554
6. Step 6: Final answer
   x = 3,057,401.02