Finding the Third Proportional to 10,218.02 and 13,731.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,218.02 : 13,731.40 = 13,731.40 : x
2. Step 2: Convert to fraction form
   10,218.02/13,731.40 = 13,731.40/x
3. Step 3: Cross multiply
   10,218.02x = 13,731.40 × 13,731.40
4. Step 4: Simplify right side
   10,218.02x = 188,551,303.05
5. Step 5: Solve for x
   x = 188,551,303.05/10,218.02
6. Step 6: Final answer
   x = 18,452.82