Finding the Third Proportional to 13,309.31 and 18,736.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309.31 : 18,736.31 = 18,736.31 : x
2. Step 2: Convert to fraction form
   13,309.31/18,736.31 = 18,736.31/x
3. Step 3: Cross multiply
   13,309.31x = 18,736.31 × 18,736.31
4. Step 4: Simplify right side
   13,309.31x = 351,049,406.10
5. Step 5: Solve for x
   x = 351,049,406.10/13,309.31
6. Step 6: Final answer
   x = 26,376.22