Finding the Third Proportional to 67,517 and 145,422

Step by Step Solution

1. Step 1: Write the proportion equation
   67,517 : 145,422 = 145,422 : x
2. Step 2: Convert to fraction form
   67,517/145,422 = 145,422/x
3. Step 3: Cross multiply
   67,517x = 145,422 × 145,422
4. Step 4: Simplify right side
   67,517x = 21,147,558,084
5. Step 5: Solve for x
   x = 21,147,558,084/67,517
6. Step 6: Final answer
   x = 313,218.27