Finding the Third Proportional to 2,128,401 and 3,189,474

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,401 : 3,189,474 = 3,189,474 : x
2. Step 2: Convert to fraction form
   2,128,401/3,189,474 = 3,189,474/x
3. Step 3: Cross multiply
   2,128,401x = 3,189,474 × 3,189,474
4. Step 4: Simplify right side
   2,128,401x = 10,172,744,396,676
5. Step 5: Solve for x
   x = 10,172,744,396,676/2,128,401
6. Step 6: Final answer
   x = 4,779,524.35