Finding the Third Proportional to 139,492 and 302,600

Step by Step Solution

1. Step 1: Write the proportion equation
   139,492 : 302,600 = 302,600 : x
2. Step 2: Convert to fraction form
   139,492/302,600 = 302,600/x
3. Step 3: Cross multiply
   139,492x = 302,600 × 302,600
4. Step 4: Simplify right side
   139,492x = 91,566,760,000
5. Step 5: Solve for x
   x = 91,566,760,000/139,492
6. Step 6: Final answer
   x = 656,430.19