Finding the Third Proportional to 91.50 and 188.75

Step by Step Solution

1. Step 1: Write the proportion equation
   91.50 : 188.75 = 188.75 : x
2. Step 2: Convert to fraction form
   91.50/188.75 = 188.75/x
3. Step 3: Cross multiply
   91.50x = 188.75 × 188.75
4. Step 4: Simplify right side
   91.50x = 35,626.56
5. Step 5: Solve for x
   x = 35,626.56/91.50
6. Step 6: Final answer
   x = 389.36