Finding the Third Proportional to 20,686 and 45,320

Step by Step Solution

1. Step 1: Write the proportion equation
   20,686 : 45,320 = 45,320 : x
2. Step 2: Convert to fraction form
   20,686/45,320 = 45,320/x
3. Step 3: Cross multiply
   20,686x = 45,320 × 45,320
4. Step 4: Simplify right side
   20,686x = 2,053,902,400
5. Step 5: Solve for x
   x = 2,053,902,400/20,686
6. Step 6: Final answer
   x = 99,289.49