Finding the Third Proportional to 12,890.81 and 17,392.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890.81 : 17,392.22 = 17,392.22 : x
2. Step 2: Convert to fraction form
   12,890.81/17,392.22 = 17,392.22/x
3. Step 3: Cross multiply
   12,890.81x = 17,392.22 × 17,392.22
4. Step 4: Simplify right side
   12,890.81x = 302,489,273.05
5. Step 5: Solve for x
   x = 302,489,273.05/12,890.81
6. Step 6: Final answer
   x = 23,465.49