Finding the Third Proportional to 2,540,238 and 5,479,317

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540,238 : 5,479,317 = 5,479,317 : x
2. Step 2: Convert to fraction form
   2,540,238/5,479,317 = 5,479,317/x
3. Step 3: Cross multiply
   2,540,238x = 5,479,317 × 5,479,317
4. Step 4: Simplify right side
   2,540,238x = 30,022,914,786,489
5. Step 5: Solve for x
   x = 30,022,914,786,489/2,540,238
6. Step 6: Final answer
   x = 11,818,937.75