Finding the Third Proportional to 12.50 and 19.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12.50 : 19.56 = 19.56 : x
2. Step 2: Convert to fraction form
   12.50/19.56 = 19.56/x
3. Step 3: Cross multiply
   12.50x = 19.56 × 19.56
4. Step 4: Simplify right side
   12.50x = 382.69
5. Step 5: Solve for x
   x = 382.69/12.50
6. Step 6: Final answer
   x = 30.62