Finding the Third Proportional to 191.75 and 215.75

Step by Step Solution

1. Step 1: Write the proportion equation
   191.75 : 215.75 = 215.75 : x
2. Step 2: Convert to fraction form
   191.75/215.75 = 215.75/x
3. Step 3: Cross multiply
   191.75x = 215.75 × 215.75
4. Step 4: Simplify right side
   191.75x = 46,548.06
5. Step 5: Solve for x
   x = 46,548.06/191.75
6. Step 6: Final answer
   x = 242.75