Finding the Third Proportional to 17,768 and 19,400

Step by Step Solution

1. Step 1: Write the proportion equation
   17,768 : 19,400 = 19,400 : x
2. Step 2: Convert to fraction form
   17,768/19,400 = 19,400/x
3. Step 3: Cross multiply
   17,768x = 19,400 × 19,400
4. Step 4: Simplify right side
   17,768x = 376,360,000
5. Step 5: Solve for x
   x = 376,360,000/17,768
6. Step 6: Final answer
   x = 21,181.90