Finding the Third Proportional to 30.88 and 62.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30.88 : 62.56 = 62.56 : x
2. Step 2: Convert to fraction form
   30.88/62.56 = 62.56/x
3. Step 3: Cross multiply
   30.88x = 62.56 × 62.56
4. Step 4: Simplify right side
   30.88x = 3,914.07
5. Step 5: Solve for x
   x = 3,914.07/30.88
6. Step 6: Final answer
   x = 126.77