Finding the Third Proportional to 67,328 and 145,799

Step by Step Solution

1. Step 1: Write the proportion equation
   67,328 : 145,799 = 145,799 : x
2. Step 2: Convert to fraction form
   67,328/145,799 = 145,799/x
3. Step 3: Cross multiply
   67,328x = 145,799 × 145,799
4. Step 4: Simplify right side
   67,328x = 21,257,348,401
5. Step 5: Solve for x
   x = 21,257,348,401/67,328
6. Step 6: Final answer
   x = 315,728.20