Finding the Third Proportional to 19,606 and 42,020

Step by Step Solution

1. Step 1: Write the proportion equation
   19,606 : 42,020 = 42,020 : x
2. Step 2: Convert to fraction form
   19,606/42,020 = 42,020/x
3. Step 3: Cross multiply
   19,606x = 42,020 × 42,020
4. Step 4: Simplify right side
   19,606x = 1,765,680,400
5. Step 5: Solve for x
   x = 1,765,680,400/19,606
6. Step 6: Final answer
   x = 90,058.17