Finding the Third Proportional to 17,907.75 and 21,660.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,907.75 : 21,660.75 = 21,660.75 : x
2. Step 2: Convert to fraction form
   17,907.75/21,660.75 = 21,660.75/x
3. Step 3: Cross multiply
   17,907.75x = 21,660.75 × 21,660.75
4. Step 4: Simplify right side
   17,907.75x = 469,188,090.56
5. Step 5: Solve for x
   x = 469,188,090.56/17,907.75
6. Step 6: Final answer
   x = 26,200.28