Finding the Third Proportional to 78.94 and 123.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78.94 : 123.56 = 123.56 : x
2. Step 2: Convert to fraction form
   78.94/123.56 = 123.56/x
3. Step 3: Cross multiply
   78.94x = 123.56 × 123.56
4. Step 4: Simplify right side
   78.94x = 15,267.69
5. Step 5: Solve for x
   x = 15,267.69/78.94
6. Step 6: Final answer
   x = 193.41