Finding the Third Proportional to 3,936,728 and 8,614,108

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936,728 : 8,614,108 = 8,614,108 : x
2. Step 2: Convert to fraction form
   3,936,728/8,614,108 = 8,614,108/x
3. Step 3: Cross multiply
   3,936,728x = 8,614,108 × 8,614,108
4. Step 4: Simplify right side
   3,936,728x = 74,202,856,635,664
5. Step 5: Solve for x
   x = 74,202,856,635,664/3,936,728
6. Step 6: Final answer
   x = 18,848,865.51