Finding the Third Proportional to 2,605,940 and 3,986,408

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605,940 : 3,986,408 = 3,986,408 : x
2. Step 2: Convert to fraction form
   2,605,940/3,986,408 = 3,986,408/x
3. Step 3: Cross multiply
   2,605,940x = 3,986,408 × 3,986,408
4. Step 4: Simplify right side
   2,605,940x = 15,891,448,742,464
5. Step 5: Solve for x
   x = 15,891,448,742,464/2,605,940
6. Step 6: Final answer
   x = 6,098,163.71