Finding the Third Proportional to 15,855.75 and 21,360.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,855.75 : 21,360.38 = 21,360.38 : x
2. Step 2: Convert to fraction form
   15,855.75/21,360.38 = 21,360.38/x
3. Step 3: Cross multiply
   15,855.75x = 21,360.38 × 21,360.38
4. Step 4: Simplify right side
   15,855.75x = 456,265,620.14
5. Step 5: Solve for x
   x = 456,265,620.14/15,855.75
6. Step 6: Final answer
   x = 28,776.04