Finding the Third Proportional to 67,311 and 143,370

Step by Step Solution

1. Step 1: Write the proportion equation
   67,311 : 143,370 = 143,370 : x
2. Step 2: Convert to fraction form
   67,311/143,370 = 143,370/x
3. Step 3: Cross multiply
   67,311x = 143,370 × 143,370
4. Step 4: Simplify right side
   67,311x = 20,554,956,900
5. Step 5: Solve for x
   x = 20,554,956,900/67,311
6. Step 6: Final answer
   x = 305,372.92