Finding the Third Proportional to 3,542,612 and 5,639,736

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542,612 : 5,639,736 = 5,639,736 : x
2. Step 2: Convert to fraction form
   3,542,612/5,639,736 = 5,639,736/x
3. Step 3: Cross multiply
   3,542,612x = 5,639,736 × 5,639,736
4. Step 4: Simplify right side
   3,542,612x = 31,806,622,149,696
5. Step 5: Solve for x
   x = 31,806,622,149,696/3,542,612
6. Step 6: Final answer
   x = 8,978,296.85