Finding the Third Proportional to 12,456.72 and 26,989.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.72 : 26,989.37 = 26,989.37 : x
2. Step 2: Convert to fraction form
   12,456.72/26,989.37 = 26,989.37/x
3. Step 3: Cross multiply
   12,456.72x = 26,989.37 × 26,989.37
4. Step 4: Simplify right side
   12,456.72x = 728,426,310.18
5. Step 5: Solve for x
   x = 728,426,310.18/12,456.72
6. Step 6: Final answer
   x = 58,476.59