Finding the Third Proportional to 3,990,080 and 8,610,016

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990,080 : 8,610,016 = 8,610,016 : x
2. Step 2: Convert to fraction form
   3,990,080/8,610,016 = 8,610,016/x
3. Step 3: Cross multiply
   3,990,080x = 8,610,016 × 8,610,016
4. Step 4: Simplify right side
   3,990,080x = 74,132,375,520,256
5. Step 5: Solve for x
   x = 74,132,375,520,256/3,990,080
6. Step 6: Final answer
   x = 18,579,170.22