Finding the Third Proportional to 19,758 and 28,856

Step by Step Solution

1. Step 1: Write the proportion equation
   19,758 : 28,856 = 28,856 : x
2. Step 2: Convert to fraction form
   19,758/28,856 = 28,856/x
3. Step 3: Cross multiply
   19,758x = 28,856 × 28,856
4. Step 4: Simplify right side
   19,758x = 832,668,736
5. Step 5: Solve for x
   x = 832,668,736/19,758
6. Step 6: Final answer
   x = 42,143.37