Finding the Third Proportional to 89,707 and 188,707

Step by Step Solution

1. Step 1: Write the proportion equation
   89,707 : 188,707 = 188,707 : x
2. Step 2: Convert to fraction form
   89,707/188,707 = 188,707/x
3. Step 3: Cross multiply
   89,707x = 188,707 × 188,707
4. Step 4: Simplify right side
   89,707x = 35,610,331,849
5. Step 5: Solve for x
   x = 35,610,331,849/89,707
6. Step 6: Final answer
   x = 396,962.69