Finding the Third Proportional to 155,540 and 240,180

Step by Step Solution

1. Step 1: Write the proportion equation
   155,540 : 240,180 = 240,180 : x
2. Step 2: Convert to fraction form
   155,540/240,180 = 240,180/x
3. Step 3: Cross multiply
   155,540x = 240,180 × 240,180
4. Step 4: Simplify right side
   155,540x = 57,686,432,400
5. Step 5: Solve for x
   x = 57,686,432,400/155,540
6. Step 6: Final answer
   x = 370,878.44