Finding the Third Proportional to 3,944,616 and 8,488,458

Step by Step Solution

1. Step 1: Write the proportion equation
   3,944,616 : 8,488,458 = 8,488,458 : x
2. Step 2: Convert to fraction form
   3,944,616/8,488,458 = 8,488,458/x
3. Step 3: Cross multiply
   3,944,616x = 8,488,458 × 8,488,458
4. Step 4: Simplify right side
   3,944,616x = 72,053,919,217,764
5. Step 5: Solve for x
   x = 72,053,919,217,764/3,944,616
6. Step 6: Final answer
   x = 18,266,396.33