Finding the Third Proportional to 67.75 and 98.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67.75 : 98.50 = 98.50 : x
2. Step 2: Convert to fraction form
   67.75/98.50 = 98.50/x
3. Step 3: Cross multiply
   67.75x = 98.50 × 98.50
4. Step 4: Simplify right side
   67.75x = 9,702.25
5. Step 5: Solve for x
   x = 9,702.25/67.75
6. Step 6: Final answer
   x = 143.21