Finding the Third Proportional to 12,321 and 18,957.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321 : 18,957.38 = 18,957.38 : x
2. Step 2: Convert to fraction form
   12,321/18,957.38 = 18,957.38/x
3. Step 3: Cross multiply
   12,321x = 18,957.38 × 18,957.38
4. Step 4: Simplify right side
   12,321x = 359,382,066.89
5. Step 5: Solve for x
   x = 359,382,066.89/12,321
6. Step 6: Final answer
   x = 29,168.25