Finding the Third Proportional to 2,560,656 and 5,518,272

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,656 : 5,518,272 = 5,518,272 : x
2. Step 2: Convert to fraction form
   2,560,656/5,518,272 = 5,518,272/x
3. Step 3: Cross multiply
   2,560,656x = 5,518,272 × 5,518,272
4. Step 4: Simplify right side
   2,560,656x = 30,451,325,865,984
5. Step 5: Solve for x
   x = 30,451,325,865,984/2,560,656
6. Step 6: Final answer
   x = 11,892,001.84