Finding the Third Proportional to 19,780 and 41,960

Step by Step Solution

1. Step 1: Write the proportion equation
   19,780 : 41,960 = 41,960 : x
2. Step 2: Convert to fraction form
   19,780/41,960 = 41,960/x
3. Step 3: Cross multiply
   19,780x = 41,960 × 41,960
4. Step 4: Simplify right side
   19,780x = 1,760,641,600
5. Step 5: Solve for x
   x = 1,760,641,600/19,780
6. Step 6: Final answer
   x = 89,011.20