Finding the Third Proportional to 13,213.88 and 19,718.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,213.88 : 19,718.25 = 19,718.25 : x
2. Step 2: Convert to fraction form
   13,213.88/19,718.25 = 19,718.25/x
3. Step 3: Cross multiply
   13,213.88x = 19,718.25 × 19,718.25
4. Step 4: Simplify right side
   13,213.88x = 388,809,383.06
5. Step 5: Solve for x
   x = 388,809,383.06/13,213.88
6. Step 6: Final answer
   x = 29,424.33