Finding the Third Proportional to 15,293.25 and 21,818.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,293.25 : 21,818.25 = 21,818.25 : x
2. Step 2: Convert to fraction form
   15,293.25/21,818.25 = 21,818.25/x
3. Step 3: Cross multiply
   15,293.25x = 21,818.25 × 21,818.25
4. Step 4: Simplify right side
   15,293.25x = 476,036,033.06
5. Step 5: Solve for x
   x = 476,036,033.06/15,293.25
6. Step 6: Final answer
   x = 31,127.20