Finding the Third Proportional to 17,380 and 19,156

Step by Step Solution

1. Step 1: Write the proportion equation
   17,380 : 19,156 = 19,156 : x
2. Step 2: Convert to fraction form
   17,380/19,156 = 19,156/x
3. Step 3: Cross multiply
   17,380x = 19,156 × 19,156
4. Step 4: Simplify right side
   17,380x = 366,952,336
5. Step 5: Solve for x
   x = 366,952,336/17,380
6. Step 6: Final answer
   x = 21,113.48