Finding the Third Proportional to 18,140.63 and 27,731.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,140.63 : 27,731.25 = 27,731.25 : x
2. Step 2: Convert to fraction form
   18,140.63/27,731.25 = 27,731.25/x
3. Step 3: Cross multiply
   18,140.63x = 27,731.25 × 27,731.25
4. Step 4: Simplify right side
   18,140.63x = 769,022,226.56
5. Step 5: Solve for x
   x = 769,022,226.56/18,140.63
6. Step 6: Final answer
   x = 42,392.27