Finding the Third Proportional to 15,696 and 21,054

Step by Step Solution

1. Step 1: Write the proportion equation
   15,696 : 21,054 = 21,054 : x
2. Step 2: Convert to fraction form
   15,696/21,054 = 21,054/x
3. Step 3: Cross multiply
   15,696x = 21,054 × 21,054
4. Step 4: Simplify right side
   15,696x = 443,270,916
5. Step 5: Solve for x
   x = 443,270,916/15,696
6. Step 6: Final answer
   x = 28,241.01