Finding the Third Proportional to 139.25 and 301.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139.25 : 301.75 = 301.75 : x
2. Step 2: Convert to fraction form
   139.25/301.75 = 301.75/x
3. Step 3: Cross multiply
   139.25x = 301.75 × 301.75
4. Step 4: Simplify right side
   139.25x = 91,053.06
5. Step 5: Solve for x
   x = 91,053.06/139.25
6. Step 6: Final answer
   x = 653.88