Finding the Third Proportional to 3,898,987 and 8,694,469

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898,987 : 8,694,469 = 8,694,469 : x
2. Step 2: Convert to fraction form
   3,898,987/8,694,469 = 8,694,469/x
3. Step 3: Cross multiply
   3,898,987x = 8,694,469 × 8,694,469
4. Step 4: Simplify right side
   3,898,987x = 75,593,791,191,961
5. Step 5: Solve for x
   x = 75,593,791,191,961/3,898,987
6. Step 6: Final answer
   x = 19,388,059.31