Finding the Third Proportional to 2,560,516 and 5,517,608

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,516 : 5,517,608 = 5,517,608 : x
2. Step 2: Convert to fraction form
   2,560,516/5,517,608 = 5,517,608/x
3. Step 3: Cross multiply
   2,560,516x = 5,517,608 × 5,517,608
4. Step 4: Simplify right side
   2,560,516x = 30,443,998,041,664
5. Step 5: Solve for x
   x = 30,443,998,041,664/2,560,516
6. Step 6: Final answer
   x = 11,889,790.20