Finding the Third Proportional to 2,561,917 and 5,503,722

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561,917 : 5,503,722 = 5,503,722 : x
2. Step 2: Convert to fraction form
   2,561,917/5,503,722 = 5,503,722/x
3. Step 3: Cross multiply
   2,561,917x = 5,503,722 × 5,503,722
4. Step 4: Simplify right side
   2,561,917x = 30,290,955,853,284
5. Step 5: Solve for x
   x = 30,290,955,853,284/2,561,917
6. Step 6: Final answer
   x = 11,823,550.82