Finding the Third Proportional to 10,155.38 and 15,415.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.38 : 15,415.31 = 15,415.31 : x
2. Step 2: Convert to fraction form
   10,155.38/15,415.31 = 15,415.31/x
3. Step 3: Cross multiply
   10,155.38x = 15,415.31 × 15,415.31
4. Step 4: Simplify right side
   10,155.38x = 237,631,859.47
5. Step 5: Solve for x
   x = 237,631,859.47/10,155.38
6. Step 6: Final answer
   x = 23,399.61