Finding the Third Proportional to 3,898,992 and 8,694,478

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898,992 : 8,694,478 = 8,694,478 : x
2. Step 2: Convert to fraction form
   3,898,992/8,694,478 = 8,694,478/x
3. Step 3: Cross multiply
   3,898,992x = 8,694,478 × 8,694,478
4. Step 4: Simplify right side
   3,898,992x = 75,593,947,692,484
5. Step 5: Solve for x
   x = 75,593,947,692,484/3,898,992
6. Step 6: Final answer
   x = 19,388,074.58