Finding the Third Proportional to 3,542,664 and 5,639,796

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542,664 : 5,639,796 = 5,639,796 : x
2. Step 2: Convert to fraction form
   3,542,664/5,639,796 = 5,639,796/x
3. Step 3: Cross multiply
   3,542,664x = 5,639,796 × 5,639,796
4. Step 4: Simplify right side
   3,542,664x = 31,807,298,921,616
5. Step 5: Solve for x
   x = 31,807,298,921,616/3,542,664
6. Step 6: Final answer
   x = 8,978,356.10