Finding the Third Proportional to 603,408 and 1,256,874

Step by Step Solution

1. Step 1: Write the proportion equation
   603,408 : 1,256,874 = 1,256,874 : x
2. Step 2: Convert to fraction form
   603,408/1,256,874 = 1,256,874/x
3. Step 3: Cross multiply
   603,408x = 1,256,874 × 1,256,874
4. Step 4: Simplify right side
   603,408x = 1,579,732,251,876
5. Step 5: Solve for x
   x = 1,579,732,251,876/603,408
6. Step 6: Final answer
   x = 2,618,016.75