Finding the Third Proportional to 65.50 and 144.13

Step by Step Solution

1. Step 1: Write the proportion equation
   65.50 : 144.13 = 144.13 : x
2. Step 2: Convert to fraction form
   65.50/144.13 = 144.13/x
3. Step 3: Cross multiply
   65.50x = 144.13 × 144.13
4. Step 4: Simplify right side
   65.50x = 20,772.02
5. Step 5: Solve for x
   x = 20,772.02/65.50
6. Step 6: Final answer
   x = 317.13