Finding the Third Proportional to 358,317 and 783,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   358,317 : 783,085.50 = 783,085.50 : x
2. Step 2: Convert to fraction form
   358,317/783,085.50 = 783,085.50/x
3. Step 3: Cross multiply
   358,317x = 783,085.50 × 783,085.50
4. Step 4: Simplify right side
   358,317x = 613,222,900,310.25
5. Step 5: Solve for x
   x = 613,222,900,310.25/358,317
6. Step 6: Final answer
   x = 1,711,397.73