Finding the Third Proportional to 71.63 and 153.38

Step by Step Solution

1. Step 1: Write the proportion equation
   71.63 : 153.38 = 153.38 : x
2. Step 2: Convert to fraction form
   71.63/153.38 = 153.38/x
3. Step 3: Cross multiply
   71.63x = 153.38 × 153.38
4. Step 4: Simplify right side
   71.63x = 23,523.89
5. Step 5: Solve for x
   x = 23,523.89/71.63
6. Step 6: Final answer
   x = 328.43