Finding the Third Proportional to 66.56 and 159.56

Step by Step Solution

1. Step 1: Write the proportion equation
   66.56 : 159.56 = 159.56 : x
2. Step 2: Convert to fraction form
   66.56/159.56 = 159.56/x
3. Step 3: Cross multiply
   66.56x = 159.56 × 159.56
4. Step 4: Simplify right side
   66.56x = 25,460.19
5. Step 5: Solve for x
   x = 25,460.19/66.56
6. Step 6: Final answer
   x = 382.50