Finding the Third Proportional to 78.94 and 106.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78.94 : 106.88 = 106.88 : x
2. Step 2: Convert to fraction form
   78.94/106.88 = 106.88/x
3. Step 3: Cross multiply
   78.94x = 106.88 × 106.88
4. Step 4: Simplify right side
   78.94x = 11,422.27
5. Step 5: Solve for x
   x = 11,422.27/78.94
6. Step 6: Final answer
   x = 144.70