Finding the Third Proportional to 12,726.75 and 27,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.75 : 27,631.50 = 27,631.50 : x
2. Step 2: Convert to fraction form
   12,726.75/27,631.50 = 27,631.50/x
3. Step 3: Cross multiply
   12,726.75x = 27,631.50 × 27,631.50
4. Step 4: Simplify right side
   12,726.75x = 763,499,792.25
5. Step 5: Solve for x
   x = 763,499,792.25/12,726.75
6. Step 6: Final answer
   x = 59,991.73