Finding the Third Proportional to 2,505,210 and 5,489,218

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505,210 : 5,489,218 = 5,489,218 : x
2. Step 2: Convert to fraction form
   2,505,210/5,489,218 = 5,489,218/x
3. Step 3: Cross multiply
   2,505,210x = 5,489,218 × 5,489,218
4. Step 4: Simplify right side
   2,505,210x = 30,131,514,251,524
5. Step 5: Solve for x
   x = 30,131,514,251,524/2,505,210
6. Step 6: Final answer
   x = 12,027,540.31