Finding the Third Proportional to 356,560 and 783,108

Step by Step Solution

1. Step 1: Write the proportion equation
   356,560 : 783,108 = 783,108 : x
2. Step 2: Convert to fraction form
   356,560/783,108 = 783,108/x
3. Step 3: Cross multiply
   356,560x = 783,108 × 783,108
4. Step 4: Simplify right side
   356,560x = 613,258,139,664
5. Step 5: Solve for x
   x = 613,258,139,664/356,560
6. Step 6: Final answer
   x = 1,719,929.72