Finding the Third Proportional to 17,380 and 19,972

Step by Step Solution

1. Step 1: Write the proportion equation
   17,380 : 19,972 = 19,972 : x
2. Step 2: Convert to fraction form
   17,380/19,972 = 19,972/x
3. Step 3: Cross multiply
   17,380x = 19,972 × 19,972
4. Step 4: Simplify right side
   17,380x = 398,880,784
5. Step 5: Solve for x
   x = 398,880,784/17,380
6. Step 6: Final answer
   x = 22,950.56