Finding the Third Proportional to 13,142.63 and 18,891.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142.63 : 18,891.75 = 18,891.75 : x
2. Step 2: Convert to fraction form
   13,142.63/18,891.75 = 18,891.75/x
3. Step 3: Cross multiply
   13,142.63x = 18,891.75 × 18,891.75
4. Step 4: Simplify right side
   13,142.63x = 356,898,218.06
5. Step 5: Solve for x
   x = 356,898,218.06/13,142.63
6. Step 6: Final answer
   x = 27,155.78