Finding the Third Proportional to 2,143,686 and 3,412,329

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,686 : 3,412,329 = 3,412,329 : x
2. Step 2: Convert to fraction form
   2,143,686/3,412,329 = 3,412,329/x
3. Step 3: Cross multiply
   2,143,686x = 3,412,329 × 3,412,329
4. Step 4: Simplify right side
   2,143,686x = 11,643,989,204,241
5. Step 5: Solve for x
   x = 11,643,989,204,241/2,143,686
6. Step 6: Final answer
   x = 5,431,760.62