Finding the Third Proportional to 16,618.50 and 22,389

Step by Step Solution

1. Step 1: Write the proportion equation
   16,618.50 : 22,389 = 22,389 : x
2. Step 2: Convert to fraction form
   16,618.50/22,389 = 22,389/x
3. Step 3: Cross multiply
   16,618.50x = 22,389 × 22,389
4. Step 4: Simplify right side
   16,618.50x = 501,267,321
5. Step 5: Solve for x
   x = 501,267,321/16,618.50
6. Step 6: Final answer
   x = 30,163.21