Finding the Third Proportional to 3,940,522 and 8,509,748

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940,522 : 8,509,748 = 8,509,748 : x
2. Step 2: Convert to fraction form
   3,940,522/8,509,748 = 8,509,748/x
3. Step 3: Cross multiply
   3,940,522x = 8,509,748 × 8,509,748
4. Step 4: Simplify right side
   3,940,522x = 72,415,811,023,504
5. Step 5: Solve for x
   x = 72,415,811,023,504/3,940,522
6. Step 6: Final answer
   x = 18,377,212.72