Finding the Third Proportional to 12,003.19 and 15,927.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.19 : 15,927.89 = 15,927.89 : x
2. Step 2: Convert to fraction form
   12,003.19/15,927.89 = 15,927.89/x
3. Step 3: Cross multiply
   12,003.19x = 15,927.89 × 15,927.89
4. Step 4: Simplify right side
   12,003.19x = 253,697,699.76
5. Step 5: Solve for x
   x = 253,697,699.76/12,003.19
6. Step 6: Final answer
   x = 21,135.86