Finding the Third Proportional to 3,578,944 and 5,420,542

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578,944 : 5,420,542 = 5,420,542 : x
2. Step 2: Convert to fraction form
   3,578,944/5,420,542 = 5,420,542/x
3. Step 3: Cross multiply
   3,578,944x = 5,420,542 × 5,420,542
4. Step 4: Simplify right side
   3,578,944x = 29,382,275,573,764
5. Step 5: Solve for x
   x = 29,382,275,573,764/3,578,944
6. Step 6: Final answer
   x = 8,209,761.20