Finding the Third Proportional to 43,200 and 70,540

Step by Step Solution

1. Step 1: Write the proportion equation
   43,200 : 70,540 = 70,540 : x
2. Step 2: Convert to fraction form
   43,200/70,540 = 70,540/x
3. Step 3: Cross multiply
   43,200x = 70,540 × 70,540
4. Step 4: Simplify right side
   43,200x = 4,975,891,600
5. Step 5: Solve for x
   x = 4,975,891,600/43,200
6. Step 6: Final answer
   x = 115,182.68