Finding the Third Proportional to 80,284 and 123,720

Step by Step Solution

1. Step 1: Write the proportion equation
   80,284 : 123,720 = 123,720 : x
2. Step 2: Convert to fraction form
   80,284/123,720 = 123,720/x
3. Step 3: Cross multiply
   80,284x = 123,720 × 123,720
4. Step 4: Simplify right side
   80,284x = 15,306,638,400
5. Step 5: Solve for x
   x = 15,306,638,400/80,284
6. Step 6: Final answer
   x = 190,656.15