Finding the Third Proportional to 687,616.50 and 1,503,018

Step by Step Solution

1. Step 1: Write the proportion equation
   687,616.50 : 1,503,018 = 1,503,018 : x
2. Step 2: Convert to fraction form
   687,616.50/1,503,018 = 1,503,018/x
3. Step 3: Cross multiply
   687,616.50x = 1,503,018 × 1,503,018
4. Step 4: Simplify right side
   687,616.50x = 2,259,063,108,324
5. Step 5: Solve for x
   x = 2,259,063,108,324/687,616.50
6. Step 6: Final answer
   x = 3,285,353.26