Finding the Third Proportional to 136.41 and 279.56

Step by Step Solution

1. Step 1: Write the proportion equation
   136.41 : 279.56 = 279.56 : x
2. Step 2: Convert to fraction form
   136.41/279.56 = 279.56/x
3. Step 3: Cross multiply
   136.41x = 279.56 × 279.56
4. Step 4: Simplify right side
   136.41x = 78,155.19
5. Step 5: Solve for x
   x = 78,155.19/136.41
6. Step 6: Final answer
   x = 572.96