Finding the Third Proportional to 12,726 and 18,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726 : 18,358.50 = 18,358.50 : x
2. Step 2: Convert to fraction form
   12,726/18,358.50 = 18,358.50/x
3. Step 3: Cross multiply
   12,726x = 18,358.50 × 18,358.50
4. Step 4: Simplify right side
   12,726x = 337,034,522.25
5. Step 5: Solve for x
   x = 337,034,522.25/12,726
6. Step 6: Final answer
   x = 26,483.93