Finding the Third Proportional to 12,289.50 and 18,536.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,289.50 : 18,536.06 = 18,536.06 : x
2. Step 2: Convert to fraction form
   12,289.50/18,536.06 = 18,536.06/x
3. Step 3: Cross multiply
   12,289.50x = 18,536.06 × 18,536.06
4. Step 4: Simplify right side
   12,289.50x = 343,585,613.00
5. Step 5: Solve for x
   x = 343,585,613.00/12,289.50
6. Step 6: Final answer
   x = 27,957.66