Finding the Third Proportional to 2,121,986 and 4,135,684

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121,986 : 4,135,684 = 4,135,684 : x
2. Step 2: Convert to fraction form
   2,121,986/4,135,684 = 4,135,684/x
3. Step 3: Cross multiply
   2,121,986x = 4,135,684 × 4,135,684
4. Step 4: Simplify right side
   2,121,986x = 17,103,882,147,856
5. Step 5: Solve for x
   x = 17,103,882,147,856/2,121,986
6. Step 6: Final answer
   x = 8,060,318.09