Finding the Third Proportional to 143,544 and 309,025

Step by Step Solution

1. Step 1: Write the proportion equation
   143,544 : 309,025 = 309,025 : x
2. Step 2: Convert to fraction form
   143,544/309,025 = 309,025/x
3. Step 3: Cross multiply
   143,544x = 309,025 × 309,025
4. Step 4: Simplify right side
   143,544x = 95,496,450,625
5. Step 5: Solve for x
   x = 95,496,450,625/143,544
6. Step 6: Final answer
   x = 665,276.50