Finding the Third Proportional to 4,040,163 and 8,721,300

Step by Step Solution

1. Step 1: Write the proportion equation
   4,040,163 : 8,721,300 = 8,721,300 : x
2. Step 2: Convert to fraction form
   4,040,163/8,721,300 = 8,721,300/x
3. Step 3: Cross multiply
   4,040,163x = 8,721,300 × 8,721,300
4. Step 4: Simplify right side
   4,040,163x = 76,061,073,690,000
5. Step 5: Solve for x
   x = 76,061,073,690,000/4,040,163
6. Step 6: Final answer
   x = 18,826,238.86