Finding the Third Proportional to 170,728.50 and 373,980

Step by Step Solution

1. Step 1: Write the proportion equation
   170,728.50 : 373,980 = 373,980 : x
2. Step 2: Convert to fraction form
   170,728.50/373,980 = 373,980/x
3. Step 3: Cross multiply
   170,728.50x = 373,980 × 373,980
4. Step 4: Simplify right side
   170,728.50x = 139,861,040,400
5. Step 5: Solve for x
   x = 139,861,040,400/170,728.50
6. Step 6: Final answer
   x = 819,201.48