Finding the Third Proportional to 4,040,170 and 8,721,314

Step by Step Solution

1. Step 1: Write the proportion equation
   4,040,170 : 8,721,314 = 8,721,314 : x
2. Step 2: Convert to fraction form
   4,040,170/8,721,314 = 8,721,314/x
3. Step 3: Cross multiply
   4,040,170x = 8,721,314 × 8,721,314
4. Step 4: Simplify right side
   4,040,170x = 76,061,317,886,596
5. Step 5: Solve for x
   x = 76,061,317,886,596/4,040,170
6. Step 6: Final answer
   x = 18,826,266.69