Finding the Third Proportional to 12,189.50 and 26,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189.50 : 26,228.50 = 26,228.50 : x
2. Step 2: Convert to fraction form
   12,189.50/26,228.50 = 26,228.50/x
3. Step 3: Cross multiply
   12,189.50x = 26,228.50 × 26,228.50
4. Step 4: Simplify right side
   12,189.50x = 687,934,212.25
5. Step 5: Solve for x
   x = 687,934,212.25/12,189.50
6. Step 6: Final answer
   x = 56,436.62