Finding the Third Proportional to 88,901 and 209,858

Step by Step Solution

1. Step 1: Write the proportion equation
   88,901 : 209,858 = 209,858 : x
2. Step 2: Convert to fraction form
   88,901/209,858 = 209,858/x
3. Step 3: Cross multiply
   88,901x = 209,858 × 209,858
4. Step 4: Simplify right side
   88,901x = 44,040,380,164
5. Step 5: Solve for x
   x = 44,040,380,164/88,901
6. Step 6: Final answer
   x = 495,386.78