Finding the Third Proportional to 12,298.50 and 18,015.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.50 : 18,015.75 = 18,015.75 : x
2. Step 2: Convert to fraction form
   12,298.50/18,015.75 = 18,015.75/x
3. Step 3: Cross multiply
   12,298.50x = 18,015.75 × 18,015.75
4. Step 4: Simplify right side
   12,298.50x = 324,567,248.06
5. Step 5: Solve for x
   x = 324,567,248.06/12,298.50
6. Step 6: Final answer
   x = 26,390.80