Finding the Third Proportional to 17,421 and 19,077

Step by Step Solution

1. Step 1: Write the proportion equation
   17,421 : 19,077 = 19,077 : x
2. Step 2: Convert to fraction form
   17,421/19,077 = 19,077/x
3. Step 3: Cross multiply
   17,421x = 19,077 × 19,077
4. Step 4: Simplify right side
   17,421x = 363,931,929
5. Step 5: Solve for x
   x = 363,931,929/17,421
6. Step 6: Final answer
   x = 20,890.42