Finding the Third Proportional to 67,313 and 143,374

Step by Step Solution

1. Step 1: Write the proportion equation
   67,313 : 143,374 = 143,374 : x
2. Step 2: Convert to fraction form
   67,313/143,374 = 143,374/x
3. Step 3: Cross multiply
   67,313x = 143,374 × 143,374
4. Step 4: Simplify right side
   67,313x = 20,556,103,876
5. Step 5: Solve for x
   x = 20,556,103,876/67,313
6. Step 6: Final answer
   x = 305,380.89