Finding the Third Proportional to 139,892 and 302,120

Step by Step Solution

1. Step 1: Write the proportion equation
   139,892 : 302,120 = 302,120 : x
2. Step 2: Convert to fraction form
   139,892/302,120 = 302,120/x
3. Step 3: Cross multiply
   139,892x = 302,120 × 302,120
4. Step 4: Simplify right side
   139,892x = 91,276,494,400
5. Step 5: Solve for x
   x = 91,276,494,400/139,892
6. Step 6: Final answer
   x = 652,478.30