Finding the Third Proportional to 71.19 and 153.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71.19 : 153.30 = 153.30 : x
2. Step 2: Convert to fraction form
   71.19/153.30 = 153.30/x
3. Step 3: Cross multiply
   71.19x = 153.30 × 153.30
4. Step 4: Simplify right side
   71.19x = 23,500.53
5. Step 5: Solve for x
   x = 23,500.53/71.19
6. Step 6: Final answer
   x = 330.10