Finding the Third Proportional to 644,568 and 1,404,681

Step by Step Solution

1. Step 1: Write the proportion equation
   644,568 : 1,404,681 = 1,404,681 : x
2. Step 2: Convert to fraction form
   644,568/1,404,681 = 1,404,681/x
3. Step 3: Cross multiply
   644,568x = 1,404,681 × 1,404,681
4. Step 4: Simplify right side
   644,568x = 1,973,128,711,761
5. Step 5: Solve for x
   x = 1,973,128,711,761/644,568
6. Step 6: Final answer
   x = 3,061,164.55