Finding the Third Proportional to 68.06 and 103.90

Step by Step Solution

1. Step 1: Write the proportion equation
   68.06 : 103.90 = 103.90 : x
2. Step 2: Convert to fraction form
   68.06/103.90 = 103.90/x
3. Step 3: Cross multiply
   68.06x = 103.90 × 103.90
4. Step 4: Simplify right side
   68.06x = 10,794.89
5. Step 5: Solve for x
   x = 10,794.89/68.06
6. Step 6: Final answer
   x = 158.60