Finding the Third Proportional to 21,606 and 28,716

Step by Step Solution

1. Step 1: Write the proportion equation
   21,606 : 28,716 = 28,716 : x
2. Step 2: Convert to fraction form
   21,606/28,716 = 28,716/x
3. Step 3: Cross multiply
   21,606x = 28,716 × 28,716
4. Step 4: Simplify right side
   21,606x = 824,608,656
5. Step 5: Solve for x
   x = 824,608,656/21,606
6. Step 6: Final answer
   x = 38,165.73