Finding the Third Proportional to 10,342.69 and 13,691.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.69 : 13,691.53 = 13,691.53 : x
2. Step 2: Convert to fraction form
   10,342.69/13,691.53 = 13,691.53/x
3. Step 3: Cross multiply
   10,342.69x = 13,691.53 × 13,691.53
4. Step 4: Simplify right side
   10,342.69x = 187,458,027.97
5. Step 5: Solve for x
   x = 187,458,027.97/10,342.69
6. Step 6: Final answer
   x = 18,124.69