Finding the Third Proportional to 3,810,365 and 8,218,986

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810,365 : 8,218,986 = 8,218,986 : x
2. Step 2: Convert to fraction form
   3,810,365/8,218,986 = 8,218,986/x
3. Step 3: Cross multiply
   3,810,365x = 8,218,986 × 8,218,986
4. Step 4: Simplify right side
   3,810,365x = 67,551,730,868,196
5. Step 5: Solve for x
   x = 67,551,730,868,196/3,810,365
6. Step 6: Final answer
   x = 17,728,414.70