Finding the Third Proportional to 68.75 and 101.31

Step by Step Solution

1. Step 1: Write the proportion equation
   68.75 : 101.31 = 101.31 : x
2. Step 2: Convert to fraction form
   68.75/101.31 = 101.31/x
3. Step 3: Cross multiply
   68.75x = 101.31 × 101.31
4. Step 4: Simplify right side
   68.75x = 10,264.22
5. Step 5: Solve for x
   x = 10,264.22/68.75
6. Step 6: Final answer
   x = 149.30