Finding the Third Proportional to 99,920 and 150,540

Step by Step Solution

1. Step 1: Write the proportion equation
   99,920 : 150,540 = 150,540 : x
2. Step 2: Convert to fraction form
   99,920/150,540 = 150,540/x
3. Step 3: Cross multiply
   99,920x = 150,540 × 150,540
4. Step 4: Simplify right side
   99,920x = 22,662,291,600
5. Step 5: Solve for x
   x = 22,662,291,600/99,920
6. Step 6: Final answer
   x = 226,804.36