Finding the Third Proportional to 3,542,642 and 5,639,775

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542,642 : 5,639,775 = 5,639,775 : x
2. Step 2: Convert to fraction form
   3,542,642/5,639,775 = 5,639,775/x
3. Step 3: Cross multiply
   3,542,642x = 5,639,775 × 5,639,775
4. Step 4: Simplify right side
   3,542,642x = 31,807,062,050,625
5. Step 5: Solve for x
   x = 31,807,062,050,625/3,542,642
6. Step 6: Final answer
   x = 8,978,344.99