Finding the Third Proportional to 3,943,656 and 8,074,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,943,656 : 8,074,128 = 8,074,128 : x
2. Step 2: Convert to fraction form
   3,943,656/8,074,128 = 8,074,128/x
3. Step 3: Cross multiply
   3,943,656x = 8,074,128 × 8,074,128
4. Step 4: Simplify right side
   3,943,656x = 65,191,542,960,384
5. Step 5: Solve for x
   x = 65,191,542,960,384/3,943,656
6. Step 6: Final answer
   x = 16,530,737.71