Finding the Third Proportional to 17,830 and 19,450

Step by Step Solution

1. Step 1: Write the proportion equation
   17,830 : 19,450 = 19,450 : x
2. Step 2: Convert to fraction form
   17,830/19,450 = 19,450/x
3. Step 3: Cross multiply
   17,830x = 19,450 × 19,450
4. Step 4: Simplify right side
   17,830x = 378,302,500
5. Step 5: Solve for x
   x = 378,302,500/17,830
6. Step 6: Final answer
   x = 21,217.19