Finding the Third Proportional to 10,009.50 and 15,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,009.50 : 15,219.50 = 15,219.50 : x
2. Step 2: Convert to fraction form
   10,009.50/15,219.50 = 15,219.50/x
3. Step 3: Cross multiply
   10,009.50x = 15,219.50 × 15,219.50
4. Step 4: Simplify right side
   10,009.50x = 231,633,180.25
5. Step 5: Solve for x
   x = 231,633,180.25/10,009.50
6. Step 6: Final answer
   x = 23,141.33