Finding the Third Proportional to 353,521.50 and 763,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,521.50 : 763,084.50 = 763,084.50 : x
2. Step 2: Convert to fraction form
   353,521.50/763,084.50 = 763,084.50/x
3. Step 3: Cross multiply
   353,521.50x = 763,084.50 × 763,084.50
4. Step 4: Simplify right side
   353,521.50x = 582,297,954,140.25
5. Step 5: Solve for x
   x = 582,297,954,140.25/353,521.50
6. Step 6: Final answer
   x = 1,647,135.90