Finding the Third Proportional to 356,560.50 and 783,105

Step by Step Solution

1. Step 1: Write the proportion equation
   356,560.50 : 783,105 = 783,105 : x
2. Step 2: Convert to fraction form
   356,560.50/783,105 = 783,105/x
3. Step 3: Cross multiply
   356,560.50x = 783,105 × 783,105
4. Step 4: Simplify right side
   356,560.50x = 613,253,441,025
5. Step 5: Solve for x
   x = 613,253,441,025/356,560.50
6. Step 6: Final answer
   x = 1,719,914.13