Finding the Third Proportional to 13,110.75 and 19,721.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,110.75 : 19,721.25 = 19,721.25 : x
2. Step 2: Convert to fraction form
   13,110.75/19,721.25 = 19,721.25/x
3. Step 3: Cross multiply
   13,110.75x = 19,721.25 × 19,721.25
4. Step 4: Simplify right side
   13,110.75x = 388,927,701.56
5. Step 5: Solve for x
   x = 388,927,701.56/13,110.75
6. Step 6: Final answer
   x = 29,664.79