Finding the Third Proportional to 66.66 and 123.56

Step by Step Solution

1. Step 1: Write the proportion equation
   66.66 : 123.56 = 123.56 : x
2. Step 2: Convert to fraction form
   66.66/123.56 = 123.56/x
3. Step 3: Cross multiply
   66.66x = 123.56 × 123.56
4. Step 4: Simplify right side
   66.66x = 15,267.69
5. Step 5: Solve for x
   x = 15,267.69/66.66
6. Step 6: Final answer
   x = 229.05