Finding the Third Proportional to 3,940,920 and 8,510,544

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940,920 : 8,510,544 = 8,510,544 : x
2. Step 2: Convert to fraction form
   3,940,920/8,510,544 = 8,510,544/x
3. Step 3: Cross multiply
   3,940,920x = 8,510,544 × 8,510,544
4. Step 4: Simplify right side
   3,940,920x = 72,429,359,175,936
5. Step 5: Solve for x
   x = 72,429,359,175,936/3,940,920
6. Step 6: Final answer
   x = 18,378,794.59