Finding the Third Proportional to 3,985,209 and 8,253,986

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985,209 : 8,253,986 = 8,253,986 : x
2. Step 2: Convert to fraction form
   3,985,209/8,253,986 = 8,253,986/x
3. Step 3: Cross multiply
   3,985,209x = 8,253,986 × 8,253,986
4. Step 4: Simplify right side
   3,985,209x = 68,128,284,888,196
5. Step 5: Solve for x
   x = 68,128,284,888,196/3,985,209
6. Step 6: Final answer
   x = 17,095,285.31