Finding the Third Proportional to 139.83 and 302.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139.83 : 302.39 = 302.39 : x
2. Step 2: Convert to fraction form
   139.83/302.39 = 302.39/x
3. Step 3: Cross multiply
   139.83x = 302.39 × 302.39
4. Step 4: Simplify right side
   139.83x = 91,440.09
5. Step 5: Solve for x
   x = 91,440.09/139.83
6. Step 6: Final answer
   x = 653.95