Finding the Third Proportional to 3,921,066 and 8,596,728

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921,066 : 8,596,728 = 8,596,728 : x
2. Step 2: Convert to fraction form
   3,921,066/8,596,728 = 8,596,728/x
3. Step 3: Cross multiply
   3,921,066x = 8,596,728 × 8,596,728
4. Step 4: Simplify right side
   3,921,066x = 73,903,732,305,984
5. Step 5: Solve for x
   x = 73,903,732,305,984/3,921,066
6. Step 6: Final answer
   x = 18,847,867.47