Finding the Third Proportional to 2,540,292 and 5,479,440

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540,292 : 5,479,440 = 5,479,440 : x
2. Step 2: Convert to fraction form
   2,540,292/5,479,440 = 5,479,440/x
3. Step 3: Cross multiply
   2,540,292x = 5,479,440 × 5,479,440
4. Step 4: Simplify right side
   2,540,292x = 30,024,262,713,600
5. Step 5: Solve for x
   x = 30,024,262,713,600/2,540,292
6. Step 6: Final answer
   x = 11,819,217.13