Finding the Third Proportional to 353,550 and 763,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,550 : 763,120.50 = 763,120.50 : x
2. Step 2: Convert to fraction form
   353,550/763,120.50 = 763,120.50/x
3. Step 3: Cross multiply
   353,550x = 763,120.50 × 763,120.50
4. Step 4: Simplify right side
   353,550x = 582,352,897,520.25
5. Step 5: Solve for x
   x = 582,352,897,520.25/353,550
6. Step 6: Final answer
   x = 1,647,158.53