Finding the Third Proportional to 2,560,672 and 5,518,324

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,672 : 5,518,324 = 5,518,324 : x
2. Step 2: Convert to fraction form
   2,560,672/5,518,324 = 5,518,324/x
3. Step 3: Cross multiply
   2,560,672x = 5,518,324 × 5,518,324
4. Step 4: Simplify right side
   2,560,672x = 30,451,899,768,976
5. Step 5: Solve for x
   x = 30,451,899,768,976/2,560,672
6. Step 6: Final answer
   x = 11,892,151.66