Finding the Third Proportional to 10,656 and 15,156

Step by Step Solution

1. Step 1: Write the proportion equation
   10,656 : 15,156 = 15,156 : x
2. Step 2: Convert to fraction form
   10,656/15,156 = 15,156/x
3. Step 3: Cross multiply
   10,656x = 15,156 × 15,156
4. Step 4: Simplify right side
   10,656x = 229,704,336
5. Step 5: Solve for x
   x = 229,704,336/10,656
6. Step 6: Final answer
   x = 21,556.34