Finding the Third Proportional to 15,154.59 and 20,386.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,154.59 : 20,386.69 = 20,386.69 : x
2. Step 2: Convert to fraction form
   15,154.59/20,386.69 = 20,386.69/x
3. Step 3: Cross multiply
   15,154.59x = 20,386.69 × 20,386.69
4. Step 4: Simplify right side
   15,154.59x = 415,617,027.22
5. Step 5: Solve for x
   x = 415,617,027.22/15,154.59
6. Step 6: Final answer
   x = 27,425.15