Finding the Third Proportional to 74.81 and 160.31

Step by Step Solution

1. Step 1: Write the proportion equation
   74.81 : 160.31 = 160.31 : x
2. Step 2: Convert to fraction form
   74.81/160.31 = 160.31/x
3. Step 3: Cross multiply
   74.81x = 160.31 × 160.31
4. Step 4: Simplify right side
   74.81x = 25,700.10
5. Step 5: Solve for x
   x = 25,700.10/74.81
6. Step 6: Final answer
   x = 343.53