Finding the Third Proportional to 315.94 and 555.38

Step by Step Solution

1. Step 1: Write the proportion equation
   315.94 : 555.38 = 555.38 : x
2. Step 2: Convert to fraction form
   315.94/555.38 = 555.38/x
3. Step 3: Cross multiply
   315.94x = 555.38 × 555.38
4. Step 4: Simplify right side
   315.94x = 308,441.39
5. Step 5: Solve for x
   x = 308,441.39/315.94
6. Step 6: Final answer
   x = 976.27