Finding the Third Proportional to 71.50 and 153.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71.50 : 153.25 = 153.25 : x
2. Step 2: Convert to fraction form
   71.50/153.25 = 153.25/x
3. Step 3: Cross multiply
   71.50x = 153.25 × 153.25
4. Step 4: Simplify right side
   71.50x = 23,485.56
5. Step 5: Solve for x
   x = 23,485.56/71.50
6. Step 6: Final answer
   x = 328.47