Finding the Third Proportional to 4,066,446 and 8,469,987

Step by Step Solution

1. Step 1: Write the proportion equation
   4,066,446 : 8,469,987 = 8,469,987 : x
2. Step 2: Convert to fraction form
   4,066,446/8,469,987 = 8,469,987/x
3. Step 3: Cross multiply
   4,066,446x = 8,469,987 × 8,469,987
4. Step 4: Simplify right side
   4,066,446x = 71,740,679,780,169
5. Step 5: Solve for x
   x = 71,740,679,780,169/4,066,446
6. Step 6: Final answer
   x = 17,642,108.07