Finding the Third Proportional to 139,104 and 209,304

Step by Step Solution

1. Step 1: Write the proportion equation
   139,104 : 209,304 = 209,304 : x
2. Step 2: Convert to fraction form
   139,104/209,304 = 209,304/x
3. Step 3: Cross multiply
   139,104x = 209,304 × 209,304
4. Step 4: Simplify right side
   139,104x = 43,808,164,416
5. Step 5: Solve for x
   x = 43,808,164,416/139,104
6. Step 6: Final answer
   x = 314,931.02