Finding the Third Proportional to 3,561,342 and 8,398,557

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561,342 : 8,398,557 = 8,398,557 : x
2. Step 2: Convert to fraction form
   3,561,342/8,398,557 = 8,398,557/x
3. Step 3: Cross multiply
   3,561,342x = 8,398,557 × 8,398,557
4. Step 4: Simplify right side
   3,561,342x = 70,535,759,682,249
5. Step 5: Solve for x
   x = 70,535,759,682,249/3,561,342
6. Step 6: Final answer
   x = 19,805,949.47