Finding the Third Proportional to 5,521,910 and 11,311,456

Step by Step Solution

1. Step 1: Write the proportion equation
   5,521,910 : 11,311,456 = 11,311,456 : x
2. Step 2: Convert to fraction form
   5,521,910/11,311,456 = 11,311,456/x
3. Step 3: Cross multiply
   5,521,910x = 11,311,456 × 11,311,456
4. Step 4: Simplify right side
   5,521,910x = 127,949,036,839,936
5. Step 5: Solve for x
   x = 127,949,036,839,936/5,521,910
6. Step 6: Final answer
   x = 23,171,155.78