Finding the Third Proportional to 67.50 and 98.30

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 98.30 = 98.30 : x
2. Step 2: Convert to fraction form
   67.50/98.30 = 98.30/x
3. Step 3: Cross multiply
   67.50x = 98.30 × 98.30
4. Step 4: Simplify right side
   67.50x = 9,662.28
5. Step 5: Solve for x
   x = 9,662.28/67.50
6. Step 6: Final answer
   x = 143.14