Finding the Third Proportional to 2,143,720 and 3,412,380

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,720 : 3,412,380 = 3,412,380 : x
2. Step 2: Convert to fraction form
   2,143,720/3,412,380 = 3,412,380/x
3. Step 3: Cross multiply
   2,143,720x = 3,412,380 × 3,412,380
4. Step 4: Simplify right side
   2,143,720x = 11,644,337,264,400
5. Step 5: Solve for x
   x = 11,644,337,264,400/2,143,720
6. Step 6: Final answer
   x = 5,431,836.84