Finding the Third Proportional to 68.25 and 100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   68.25 : 100.31 = 100.31 : x
2. Step 2: Convert to fraction form
   68.25/100.31 = 100.31/x
3. Step 3: Cross multiply
   68.25x = 100.31 × 100.31
4. Step 4: Simplify right side
   68.25x = 10,062.60
5. Step 5: Solve for x
   x = 10,062.60/68.25
6. Step 6: Final answer
   x = 147.44