Finding the Third Proportional to 136.44 and 298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   136.44 : 298.56 = 298.56 : x
2. Step 2: Convert to fraction form
   136.44/298.56 = 298.56/x
3. Step 3: Cross multiply
   136.44x = 298.56 × 298.56
4. Step 4: Simplify right side
   136.44x = 89,139.57
5. Step 5: Solve for x
   x = 89,139.57/136.44
6. Step 6: Final answer
   x = 653.34