Finding the Third Proportional to 68.48 and 100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   68.48 : 100.31 = 100.31 : x
2. Step 2: Convert to fraction form
   68.48/100.31 = 100.31/x
3. Step 3: Cross multiply
   68.48x = 100.31 × 100.31
4. Step 4: Simplify right side
   68.48x = 10,062.73
5. Step 5: Solve for x
   x = 10,062.73/68.48
6. Step 6: Final answer
   x = 146.95