Finding the Third Proportional to 72.56 and 156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72.56 : 156.56 = 156.56 : x
2. Step 2: Convert to fraction form
   72.56/156.56 = 156.56/x
3. Step 3: Cross multiply
   72.56x = 156.56 × 156.56
4. Step 4: Simplify right side
   72.56x = 24,511.82
5. Step 5: Solve for x
   x = 24,511.82/72.56
6. Step 6: Final answer
   x = 337.80