Finding the Third Proportional to 15,108.75 and 21,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,108.75 : 21,553.50 = 21,553.50 : x
2. Step 2: Convert to fraction form
   15,108.75/21,553.50 = 21,553.50/x
3. Step 3: Cross multiply
   15,108.75x = 21,553.50 × 21,553.50
4. Step 4: Simplify right side
   15,108.75x = 464,553,362.25
5. Step 5: Solve for x
   x = 464,553,362.25/15,108.75
6. Step 6: Final answer
   x = 30,747.31