Finding the Third Proportional to 136.31 and 194.88

Step by Step Solution

1. Step 1: Write the proportion equation
   136.31 : 194.88 = 194.88 : x
2. Step 2: Convert to fraction form
   136.31/194.88 = 194.88/x
3. Step 3: Cross multiply
   136.31x = 194.88 × 194.88
4. Step 4: Simplify right side
   136.31x = 37,976.27
5. Step 5: Solve for x
   x = 37,976.27/136.31
6. Step 6: Final answer
   x = 278.60