Finding the Third Proportional to 3,899,522 and 8,415,592

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899,522 : 8,415,592 = 8,415,592 : x
2. Step 2: Convert to fraction form
   3,899,522/8,415,592 = 8,415,592/x
3. Step 3: Cross multiply
   3,899,522x = 8,415,592 × 8,415,592
4. Step 4: Simplify right side
   3,899,522x = 70,822,188,710,464
5. Step 5: Solve for x
   x = 70,822,188,710,464/3,899,522
6. Step 6: Final answer
   x = 18,161,761.55