Finding the Third Proportional to 139,104 and 300,380

Step by Step Solution

1. Step 1: Write the proportion equation
   139,104 : 300,380 = 300,380 : x
2. Step 2: Convert to fraction form
   139,104/300,380 = 300,380/x
3. Step 3: Cross multiply
   139,104x = 300,380 × 300,380
4. Step 4: Simplify right side
   139,104x = 90,228,144,400
5. Step 5: Solve for x
   x = 90,228,144,400/139,104
6. Step 6: Final answer
   x = 648,638.03