Finding the Third Proportional to 17,856 and 19,776

Step by Step Solution

1. Step 1: Write the proportion equation
   17,856 : 19,776 = 19,776 : x
2. Step 2: Convert to fraction form
   17,856/19,776 = 19,776/x
3. Step 3: Cross multiply
   17,856x = 19,776 × 19,776
4. Step 4: Simplify right side
   17,856x = 391,090,176
5. Step 5: Solve for x
   x = 391,090,176/17,856
6. Step 6: Final answer
   x = 21,902.45