Finding the Third Proportional to 65,669 and 143,872

Step by Step Solution

1. Step 1: Write the proportion equation
   65,669 : 143,872 = 143,872 : x
2. Step 2: Convert to fraction form
   65,669/143,872 = 143,872/x
3. Step 3: Cross multiply
   65,669x = 143,872 × 143,872
4. Step 4: Simplify right side
   65,669x = 20,699,152,384
5. Step 5: Solve for x
   x = 20,699,152,384/65,669
6. Step 6: Final answer
   x = 315,204.32