Finding the Third Proportional to 78.26 and 104.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78.26 : 104.52 = 104.52 : x
2. Step 2: Convert to fraction form
   78.26/104.52 = 104.52/x
3. Step 3: Cross multiply
   78.26x = 104.52 × 104.52
4. Step 4: Simplify right side
   78.26x = 10,924.33
5. Step 5: Solve for x
   x = 10,924.33/78.26
6. Step 6: Final answer
   x = 139.59