Finding the Third Proportional to 3,542,594 and 5,639,709

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542,594 : 5,639,709 = 5,639,709 : x
2. Step 2: Convert to fraction form
   3,542,594/5,639,709 = 5,639,709/x
3. Step 3: Cross multiply
   3,542,594x = 5,639,709 × 5,639,709
4. Step 4: Simplify right side
   3,542,594x = 31,806,317,604,681
5. Step 5: Solve for x
   x = 31,806,317,604,681/3,542,594
6. Step 6: Final answer
   x = 8,978,256.50