Finding the Third Proportional to 9,870 and 20,849

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870 : 20,849 = 20,849 : x
2. Step 2: Convert to fraction form
   9,870/20,849 = 20,849/x
3. Step 3: Cross multiply
   9,870x = 20,849 × 20,849
4. Step 4: Simplify right side
   9,870x = 434,680,801
5. Step 5: Solve for x
   x = 434,680,801/9,870
6. Step 6: Final answer
   x = 44,040.61