Finding the Third Proportional to 17,961.75 and 19,581.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,961.75 : 19,581.75 = 19,581.75 : x
2. Step 2: Convert to fraction form
   17,961.75/19,581.75 = 19,581.75/x
3. Step 3: Cross multiply
   17,961.75x = 19,581.75 × 19,581.75
4. Step 4: Simplify right side
   17,961.75x = 383,444,933.06
5. Step 5: Solve for x
   x = 383,444,933.06/17,961.75
6. Step 6: Final answer
   x = 21,347.86