Finding the Third Proportional to 17,840 and 19,760

Step by Step Solution

1. Step 1: Write the proportion equation
   17,840 : 19,760 = 19,760 : x
2. Step 2: Convert to fraction form
   17,840/19,760 = 19,760/x
3. Step 3: Cross multiply
   17,840x = 19,760 × 19,760
4. Step 4: Simplify right side
   17,840x = 390,457,600
5. Step 5: Solve for x
   x = 390,457,600/17,840
6. Step 6: Final answer
   x = 21,886.64