Finding the Third Proportional to 139,500 and 302,180

Step by Step Solution

1. Step 1: Write the proportion equation
   139,500 : 302,180 = 302,180 : x
2. Step 2: Convert to fraction form
   139,500/302,180 = 302,180/x
3. Step 3: Cross multiply
   139,500x = 302,180 × 302,180
4. Step 4: Simplify right side
   139,500x = 91,312,752,400
5. Step 5: Solve for x
   x = 91,312,752,400/139,500
6. Step 6: Final answer
   x = 654,571.70