Finding the Third Proportional to 89,810 and 188,917

Step by Step Solution

1. Step 1: Write the proportion equation
   89,810 : 188,917 = 188,917 : x
2. Step 2: Convert to fraction form
   89,810/188,917 = 188,917/x
3. Step 3: Cross multiply
   89,810x = 188,917 × 188,917
4. Step 4: Simplify right side
   89,810x = 35,689,632,889
5. Step 5: Solve for x
   x = 35,689,632,889/89,810
6. Step 6: Final answer
   x = 397,390.41