Finding the Third Proportional to 3,644,862 and 8,437,908

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644,862 : 8,437,908 = 8,437,908 : x
2. Step 2: Convert to fraction form
   3,644,862/8,437,908 = 8,437,908/x
3. Step 3: Cross multiply
   3,644,862x = 8,437,908 × 8,437,908
4. Step 4: Simplify right side
   3,644,862x = 71,198,291,416,464
5. Step 5: Solve for x
   x = 71,198,291,416,464/3,644,862
6. Step 6: Final answer
   x = 19,533,878.49