Finding the Third Proportional to 12,451.50 and 26,790.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.50 : 26,790.50 = 26,790.50 : x
2. Step 2: Convert to fraction form
   12,451.50/26,790.50 = 26,790.50/x
3. Step 3: Cross multiply
   12,451.50x = 26,790.50 × 26,790.50
4. Step 4: Simplify right side
   12,451.50x = 717,730,890.25
5. Step 5: Solve for x
   x = 717,730,890.25/12,451.50
6. Step 6: Final answer
   x = 57,642.12