Finding the Third Proportional to 68.81 and 160.31

Step by Step Solution

1. Step 1: Write the proportion equation
   68.81 : 160.31 = 160.31 : x
2. Step 2: Convert to fraction form
   68.81/160.31 = 160.31/x
3. Step 3: Cross multiply
   68.81x = 160.31 × 160.31
4. Step 4: Simplify right side
   68.81x = 25,700.10
5. Step 5: Solve for x
   x = 25,700.10/68.81
6. Step 6: Final answer
   x = 373.48