Finding the Third Proportional to 12,145.50 and 16,407

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.50 : 16,407 = 16,407 : x
2. Step 2: Convert to fraction form
   12,145.50/16,407 = 16,407/x
3. Step 3: Cross multiply
   12,145.50x = 16,407 × 16,407
4. Step 4: Simplify right side
   12,145.50x = 269,189,649
5. Step 5: Solve for x
   x = 269,189,649/12,145.50
6. Step 6: Final answer
   x = 22,163.74