Finding the Third Proportional to 17,816 and 19,472

Step by Step Solution

1. Step 1: Write the proportion equation
   17,816 : 19,472 = 19,472 : x
2. Step 2: Convert to fraction form
   17,816/19,472 = 19,472/x
3. Step 3: Cross multiply
   17,816x = 19,472 × 19,472
4. Step 4: Simplify right side
   17,816x = 379,158,784
5. Step 5: Solve for x
   x = 379,158,784/17,816
6. Step 6: Final answer
   x = 21,281.93