Finding the Third Proportional to 144,669 and 300,408

Step by Step Solution

1. Step 1: Write the proportion equation
   144,669 : 300,408 = 300,408 : x
2. Step 2: Convert to fraction form
   144,669/300,408 = 300,408/x
3. Step 3: Cross multiply
   144,669x = 300,408 × 300,408
4. Step 4: Simplify right side
   144,669x = 90,244,966,464
5. Step 5: Solve for x
   x = 90,244,966,464/144,669
6. Step 6: Final answer
   x = 623,803.07