Finding the Third Proportional to 148.50 and 216.94

Step by Step Solution

1. Step 1: Write the proportion equation
   148.50 : 216.94 = 216.94 : x
2. Step 2: Convert to fraction form
   148.50/216.94 = 216.94/x
3. Step 3: Cross multiply
   148.50x = 216.94 × 216.94
4. Step 4: Simplify right side
   148.50x = 47,061.88
5. Step 5: Solve for x
   x = 47,061.88/148.50
6. Step 6: Final answer
   x = 316.92