Finding the Third Proportional to 12,438.50 and 27,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,438.50 : 27,239.50 = 27,239.50 : x
2. Step 2: Convert to fraction form
   12,438.50/27,239.50 = 27,239.50/x
3. Step 3: Cross multiply
   12,438.50x = 27,239.50 × 27,239.50
4. Step 4: Simplify right side
   12,438.50x = 741,990,360.25
5. Step 5: Solve for x
   x = 741,990,360.25/12,438.50
6. Step 6: Final answer
   x = 59,652.72