Finding the Third Proportional to 3,542,442 and 5,639,478

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542,442 : 5,639,478 = 5,639,478 : x
2. Step 2: Convert to fraction form
   3,542,442/5,639,478 = 5,639,478/x
3. Step 3: Cross multiply
   3,542,442x = 5,639,478 × 5,639,478
4. Step 4: Simplify right side
   3,542,442x = 31,803,712,112,484
5. Step 5: Solve for x
   x = 31,803,712,112,484/3,542,442
6. Step 6: Final answer
   x = 8,977,906.23