Finding the Third Proportional to 17,967 and 21,261

Step by Step Solution

1. Step 1: Write the proportion equation
   17,967 : 21,261 = 21,261 : x
2. Step 2: Convert to fraction form
   17,967/21,261 = 21,261/x
3. Step 3: Cross multiply
   17,967x = 21,261 × 21,261
4. Step 4: Simplify right side
   17,967x = 452,030,121
5. Step 5: Solve for x
   x = 452,030,121/17,967
6. Step 6: Final answer
   x = 25,158.91