Finding the Third Proportional to 139.94 and 294.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139.94 : 294.38 = 294.38 : x
2. Step 2: Convert to fraction form
   139.94/294.38 = 294.38/x
3. Step 3: Cross multiply
   139.94x = 294.38 × 294.38
4. Step 4: Simplify right side
   139.94x = 86,656.64
5. Step 5: Solve for x
   x = 86,656.64/139.94
6. Step 6: Final answer
   x = 619.25