Finding the Third Proportional to 88,906 and 209,870

Step by Step Solution

1. Step 1: Write the proportion equation
   88,906 : 209,870 = 209,870 : x
2. Step 2: Convert to fraction form
   88,906/209,870 = 209,870/x
3. Step 3: Cross multiply
   88,906x = 209,870 × 209,870
4. Step 4: Simplify right side
   88,906x = 44,045,416,900
5. Step 5: Solve for x
   x = 44,045,416,900/88,906
6. Step 6: Final answer
   x = 495,415.57