Finding the Third Proportional to 143,544 and 309,024

Step by Step Solution

1. Step 1: Write the proportion equation
   143,544 : 309,024 = 309,024 : x
2. Step 2: Convert to fraction form
   143,544/309,024 = 309,024/x
3. Step 3: Cross multiply
   143,544x = 309,024 × 309,024
4. Step 4: Simplify right side
   143,544x = 95,495,832,576
5. Step 5: Solve for x
   x = 95,495,832,576/143,544
6. Step 6: Final answer
   x = 665,272.20