Finding the Third Proportional to 64,892 and 140,800

Step by Step Solution

1. Step 1: Write the proportion equation
   64,892 : 140,800 = 140,800 : x
2. Step 2: Convert to fraction form
   64,892/140,800 = 140,800/x
3. Step 3: Cross multiply
   64,892x = 140,800 × 140,800
4. Step 4: Simplify right side
   64,892x = 19,824,640,000
5. Step 5: Solve for x
   x = 19,824,640,000/64,892
6. Step 6: Final answer
   x = 305,502.06