Finding the Third Proportional to 90.88 and 130.94

Step by Step Solution

1. Step 1: Write the proportion equation
   90.88 : 130.94 = 130.94 : x
2. Step 2: Convert to fraction form
   90.88/130.94 = 130.94/x
3. Step 3: Cross multiply
   90.88x = 130.94 × 130.94
4. Step 4: Simplify right side
   90.88x = 17,144.63
5. Step 5: Solve for x
   x = 17,144.63/90.88
6. Step 6: Final answer
   x = 188.66