Finding the Third Proportional to 669,408 and 1,019,816

Step by Step Solution

1. Step 1: Write the proportion equation
   669,408 : 1,019,816 = 1,019,816 : x
2. Step 2: Convert to fraction form
   669,408/1,019,816 = 1,019,816/x
3. Step 3: Cross multiply
   669,408x = 1,019,816 × 1,019,816
4. Step 4: Simplify right side
   669,408x = 1,040,024,673,856
5. Step 5: Solve for x
   x = 1,040,024,673,856/669,408
6. Step 6: Final answer
   x = 1,553,648.41