Finding the Third Proportional to 19,856 and 30,724

Step by Step Solution

1. Step 1: Write the proportion equation
   19,856 : 30,724 = 30,724 : x
2. Step 2: Convert to fraction form
   19,856/30,724 = 30,724/x
3. Step 3: Cross multiply
   19,856x = 30,724 × 30,724
4. Step 4: Simplify right side
   19,856x = 943,964,176
5. Step 5: Solve for x
   x = 943,964,176/19,856
6. Step 6: Final answer
   x = 47,540.50