Finding the Third Proportional to 19,708 and 42,496

Step by Step Solution

1. Step 1: Write the proportion equation
   19,708 : 42,496 = 42,496 : x
2. Step 2: Convert to fraction form
   19,708/42,496 = 42,496/x
3. Step 3: Cross multiply
   19,708x = 42,496 × 42,496
4. Step 4: Simplify right side
   19,708x = 1,805,910,016
5. Step 5: Solve for x
   x = 1,805,910,016/19,708
6. Step 6: Final answer
   x = 91,633.35