Finding the Third Proportional to 19,651.50 and 40,209.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,651.50 : 40,209.75 = 40,209.75 : x
2. Step 2: Convert to fraction form
   19,651.50/40,209.75 = 40,209.75/x
3. Step 3: Cross multiply
   19,651.50x = 40,209.75 × 40,209.75
4. Step 4: Simplify right side
   19,651.50x = 1,616,823,995.06
5. Step 5: Solve for x
   x = 1,616,823,995.06/19,651.50
6. Step 6: Final answer
   x = 82,274.84