Finding the Third Proportional to 11,716 and 21,560

Step by Step Solution

1. Step 1: Write the proportion equation
   11,716 : 21,560 = 21,560 : x
2. Step 2: Convert to fraction form
   11,716/21,560 = 21,560/x
3. Step 3: Cross multiply
   11,716x = 21,560 × 21,560
4. Step 4: Simplify right side
   11,716x = 464,833,600
5. Step 5: Solve for x
   x = 464,833,600/11,716
6. Step 6: Final answer
   x = 39,675.11