Finding the Third Proportional to 5,218 and 10,532

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218 : 10,532 = 10,532 : x
2. Step 2: Convert to fraction form
   5,218/10,532 = 10,532/x
3. Step 3: Cross multiply
   5,218x = 10,532 × 10,532
4. Step 4: Simplify right side
   5,218x = 110,923,024
5. Step 5: Solve for x
   x = 110,923,024/5,218
6. Step 6: Final answer
   x = 21,257.77