Finding the Third Proportional to 2,521,919 and 5,223,289

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521,919 : 5,223,289 = 5,223,289 : x
2. Step 2: Convert to fraction form
   2,521,919/5,223,289 = 5,223,289/x
3. Step 3: Cross multiply
   2,521,919x = 5,223,289 × 5,223,289
4. Step 4: Simplify right side
   2,521,919x = 27,282,747,977,521
5. Step 5: Solve for x
   x = 27,282,747,977,521/2,521,919
6. Step 6: Final answer
   x = 10,818,249.11