Finding the Third Proportional to 128.06 and 196.97

Step by Step Solution

1. Step 1: Write the proportion equation
   128.06 : 196.97 = 196.97 : x
2. Step 2: Convert to fraction form
   128.06/196.97 = 196.97/x
3. Step 3: Cross multiply
   128.06x = 196.97 × 196.97
4. Step 4: Simplify right side
   128.06x = 38,796.69
5. Step 5: Solve for x
   x = 38,796.69/128.06
6. Step 6: Final answer
   x = 302.95