Finding the Third Proportional to 3,998,186 and 5,698,218

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,186 : 5,698,218 = 5,698,218 : x
2. Step 2: Convert to fraction form
   3,998,186/5,698,218 = 5,698,218/x
3. Step 3: Cross multiply
   3,998,186x = 5,698,218 × 5,698,218
4. Step 4: Simplify right side
   3,998,186x = 32,469,688,375,524
5. Step 5: Solve for x
   x = 32,469,688,375,524/3,998,186
6. Step 6: Final answer
   x = 8,121,105.02