Finding the Third Proportional to 20,090 and 42,016

Step by Step Solution

1. Step 1: Write the proportion equation
   20,090 : 42,016 = 42,016 : x
2. Step 2: Convert to fraction form
   20,090/42,016 = 42,016/x
3. Step 3: Cross multiply
   20,090x = 42,016 × 42,016
4. Step 4: Simplify right side
   20,090x = 1,765,344,256
5. Step 5: Solve for x
   x = 1,765,344,256/20,090
6. Step 6: Final answer
   x = 87,871.79