Finding the Third Proportional to 65,279 and 143,167

Step by Step Solution

1. Step 1: Write the proportion equation
   65,279 : 143,167 = 143,167 : x
2. Step 2: Convert to fraction form
   65,279/143,167 = 143,167/x
3. Step 3: Cross multiply
   65,279x = 143,167 × 143,167
4. Step 4: Simplify right side
   65,279x = 20,496,789,889
5. Step 5: Solve for x
   x = 20,496,789,889/65,279
6. Step 6: Final answer
   x = 313,987.50