Finding the Third Proportional to 38.16 and 50.91

Step by Step Solution

1. Step 1: Write the proportion equation
   38.16 : 50.91 = 50.91 : x
2. Step 2: Convert to fraction form
   38.16/50.91 = 50.91/x
3. Step 3: Cross multiply
   38.16x = 50.91 × 50.91
4. Step 4: Simplify right side
   38.16x = 2,591.45
5. Step 5: Solve for x
   x = 2,591.45/38.16
6. Step 6: Final answer
   x = 67.92