Finding the Third Proportional to 12,245.55 and 18,320.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,245.55 : 18,320.87 = 18,320.87 : x
2. Step 2: Convert to fraction form
   12,245.55/18,320.87 = 18,320.87/x
3. Step 3: Cross multiply
   12,245.55x = 18,320.87 × 18,320.87
4. Step 4: Simplify right side
   12,245.55x = 335,654,317.63
5. Step 5: Solve for x
   x = 335,654,317.63/12,245.55
6. Step 6: Final answer
   x = 27,410.30