Finding the Third Proportional to 2,486,821 and 3,954,428

Step by Step Solution

1. Step 1: Write the proportion equation
   2,486,821 : 3,954,428 = 3,954,428 : x
2. Step 2: Convert to fraction form
   2,486,821/3,954,428 = 3,954,428/x
3. Step 3: Cross multiply
   2,486,821x = 3,954,428 × 3,954,428
4. Step 4: Simplify right side
   2,486,821x = 15,637,500,807,184
5. Step 5: Solve for x
   x = 15,637,500,807,184/2,486,821
6. Step 6: Final answer
   x = 6,288,148.93