Finding the Third Proportional to 118,390.50 and 180,540

Step by Step Solution

1. Step 1: Write the proportion equation
   118,390.50 : 180,540 = 180,540 : x
2. Step 2: Convert to fraction form
   118,390.50/180,540 = 180,540/x
3. Step 3: Cross multiply
   118,390.50x = 180,540 × 180,540
4. Step 4: Simplify right side
   118,390.50x = 32,594,691,600
5. Step 5: Solve for x
   x = 32,594,691,600/118,390.50
6. Step 6: Final answer
   x = 275,315.09