Finding the Third Proportional to 21,570 and 28,986

Step by Step Solution

1. Step 1: Write the proportion equation
   21,570 : 28,986 = 28,986 : x
2. Step 2: Convert to fraction form
   21,570/28,986 = 28,986/x
3. Step 3: Cross multiply
   21,570x = 28,986 × 28,986
4. Step 4: Simplify right side
   21,570x = 840,188,196
5. Step 5: Solve for x
   x = 840,188,196/21,570
6. Step 6: Final answer
   x = 38,951.70