Finding the Third Proportional to 21,197 and 28,786

Step by Step Solution

1. Step 1: Write the proportion equation
   21,197 : 28,786 = 28,786 : x
2. Step 2: Convert to fraction form
   21,197/28,786 = 28,786/x
3. Step 3: Cross multiply
   21,197x = 28,786 × 28,786
4. Step 4: Simplify right side
   21,197x = 828,633,796
5. Step 5: Solve for x
   x = 828,633,796/21,197
6. Step 6: Final answer
   x = 39,092.03