Finding the Third Proportional to 144,408 and 300,372

Step by Step Solution

1. Step 1: Write the proportion equation
   144,408 : 300,372 = 300,372 : x
2. Step 2: Convert to fraction form
   144,408/300,372 = 300,372/x
3. Step 3: Cross multiply
   144,408x = 300,372 × 300,372
4. Step 4: Simplify right side
   144,408x = 90,223,338,384
5. Step 5: Solve for x
   x = 90,223,338,384/144,408
6. Step 6: Final answer
   x = 624,780.75