Finding the Third Proportional to 89.88 and 116.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89.88 : 116.69 = 116.69 : x
2. Step 2: Convert to fraction form
   89.88/116.69 = 116.69/x
3. Step 3: Cross multiply
   89.88x = 116.69 × 116.69
4. Step 4: Simplify right side
   89.88x = 13,615.97
5. Step 5: Solve for x
   x = 13,615.97/89.88
6. Step 6: Final answer
   x = 151.50