Finding the Third Proportional to 139,504 and 302,188

Step by Step Solution

1. Step 1: Write the proportion equation
   139,504 : 302,188 = 302,188 : x
2. Step 2: Convert to fraction form
   139,504/302,188 = 302,188/x
3. Step 3: Cross multiply
   139,504x = 302,188 × 302,188
4. Step 4: Simplify right side
   139,504x = 91,317,587,344
5. Step 5: Solve for x
   x = 91,317,587,344/139,504
6. Step 6: Final answer
   x = 654,587.59