Finding the Third Proportional to 78.75 and 102.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78.75 : 102.94 = 102.94 : x
2. Step 2: Convert to fraction form
   78.75/102.94 = 102.94/x
3. Step 3: Cross multiply
   78.75x = 102.94 × 102.94
4. Step 4: Simplify right side
   78.75x = 10,596.13
5. Step 5: Solve for x
   x = 10,596.13/78.75
6. Step 6: Final answer
   x = 134.55