Finding the Third Proportional to 2,540,223 and 5,479,290

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540,223 : 5,479,290 = 5,479,290 : x
2. Step 2: Convert to fraction form
   2,540,223/5,479,290 = 5,479,290/x
3. Step 3: Cross multiply
   2,540,223x = 5,479,290 × 5,479,290
4. Step 4: Simplify right side
   2,540,223x = 30,022,618,904,100
5. Step 5: Solve for x
   x = 30,022,618,904,100/2,540,223
6. Step 6: Final answer
   x = 11,818,891.06