Finding the Third Proportional to 4,965 and 10,245

Step by Step Solution

1. Step 1: Write the proportion equation
   4,965 : 10,245 = 10,245 : x
2. Step 2: Convert to fraction form
   4,965/10,245 = 10,245/x
3. Step 3: Cross multiply
   4,965x = 10,245 × 10,245
4. Step 4: Simplify right side
   4,965x = 104,960,025
5. Step 5: Solve for x
   x = 104,960,025/4,965
6. Step 6: Final answer
   x = 21,139.98