Finding the Third Proportional to 77.59 and 123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77.59 : 123.50 = 123.50 : x
2. Step 2: Convert to fraction form
   77.59/123.50 = 123.50/x
3. Step 3: Cross multiply
   77.59x = 123.50 × 123.50
4. Step 4: Simplify right side
   77.59x = 15,253.21
5. Step 5: Solve for x
   x = 15,253.21/77.59
6. Step 6: Final answer
   x = 196.59