Finding the Third Proportional to 10,342.69 and 13,873.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.69 : 13,873.78 = 13,873.78 : x
2. Step 2: Convert to fraction form
   10,342.69/13,873.78 = 13,873.78/x
3. Step 3: Cross multiply
   10,342.69x = 13,873.78 × 13,873.78
4. Step 4: Simplify right side
   10,342.69x = 192,481,806.17
5. Step 5: Solve for x
   x = 192,481,806.17/10,342.69
6. Step 6: Final answer
   x = 18,610.42