Finding the Third Proportional to 67,200 and 141,328

Step by Step Solution

1. Step 1: Write the proportion equation
   67,200 : 141,328 = 141,328 : x
2. Step 2: Convert to fraction form
   67,200/141,328 = 141,328/x
3. Step 3: Cross multiply
   67,200x = 141,328 × 141,328
4. Step 4: Simplify right side
   67,200x = 19,973,603,584
5. Step 5: Solve for x
   x = 19,973,603,584/67,200
6. Step 6: Final answer
   x = 297,226.24