Finding the Third Proportional to 144,699 and 300,486

Step by Step Solution

1. Step 1: Write the proportion equation
   144,699 : 300,486 = 300,486 : x
2. Step 2: Convert to fraction form
   144,699/300,486 = 300,486/x
3. Step 3: Cross multiply
   144,699x = 300,486 × 300,486
4. Step 4: Simplify right side
   144,699x = 90,291,836,196
5. Step 5: Solve for x
   x = 90,291,836,196/144,699
6. Step 6: Final answer
   x = 623,997.65