Finding the Third Proportional to 8,485.59 and 13,579.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485.59 : 13,579.31 = 13,579.31 : x
2. Step 2: Convert to fraction form
   8,485.59/13,579.31 = 13,579.31/x
3. Step 3: Cross multiply
   8,485.59x = 13,579.31 × 13,579.31
4. Step 4: Simplify right side
   8,485.59x = 184,397,727.97
5. Step 5: Solve for x
   x = 184,397,727.97/8,485.59
6. Step 6: Final answer
   x = 21,730.68