Finding the Third Proportional to 3,561,336 and 8,398,542

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561,336 : 8,398,542 = 8,398,542 : x
2. Step 2: Convert to fraction form
   3,561,336/8,398,542 = 8,398,542/x
3. Step 3: Cross multiply
   3,561,336x = 8,398,542 × 8,398,542
4. Step 4: Simplify right side
   3,561,336x = 70,535,507,725,764
5. Step 5: Solve for x
   x = 70,535,507,725,764/3,561,336
6. Step 6: Final answer
   x = 19,805,912.09