Finding the Third Proportional to 12,991.50 and 27,759.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,991.50 : 27,759.94 = 27,759.94 : x
2. Step 2: Convert to fraction form
   12,991.50/27,759.94 = 27,759.94/x
3. Step 3: Cross multiply
   12,991.50x = 27,759.94 × 27,759.94
4. Step 4: Simplify right side
   12,991.50x = 770,614,130.00
5. Step 5: Solve for x
   x = 770,614,130.00/12,991.50
6. Step 6: Final answer
   x = 59,316.79