Finding the Third Proportional to 2,540,268 and 5,479,380

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540,268 : 5,479,380 = 5,479,380 : x
2. Step 2: Convert to fraction form
   2,540,268/5,479,380 = 5,479,380/x
3. Step 3: Cross multiply
   2,540,268x = 5,479,380 × 5,479,380
4. Step 4: Simplify right side
   2,540,268x = 30,023,605,184,400
5. Step 5: Solve for x
   x = 30,023,605,184,400/2,540,268
6. Step 6: Final answer
   x = 11,819,069.95