Finding the Third Proportional to 2,510,721 and 5,490,918

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510,721 : 5,490,918 = 5,490,918 : x
2. Step 2: Convert to fraction form
   2,510,721/5,490,918 = 5,490,918/x
3. Step 3: Cross multiply
   2,510,721x = 5,490,918 × 5,490,918
4. Step 4: Simplify right side
   2,510,721x = 30,150,180,482,724
5. Step 5: Solve for x
   x = 30,150,180,482,724/2,510,721
6. Step 6: Final answer
   x = 12,008,574.62