Finding the Third Proportional to 2,561,904 and 5,519,664

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561,904 : 5,519,664 = 5,519,664 : x
2. Step 2: Convert to fraction form
   2,561,904/5,519,664 = 5,519,664/x
3. Step 3: Cross multiply
   2,561,904x = 5,519,664 × 5,519,664
4. Step 4: Simplify right side
   2,561,904x = 30,466,690,672,896
5. Step 5: Solve for x
   x = 30,466,690,672,896/2,561,904
6. Step 6: Final answer
   x = 11,892,206.22