Finding the Third Proportional to 12,706.88 and 26,309.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.88 : 26,309.81 = 26,309.81 : x
2. Step 2: Convert to fraction form
   12,706.88/26,309.81 = 26,309.81/x
3. Step 3: Cross multiply
   12,706.88x = 26,309.81 × 26,309.81
4. Step 4: Simplify right side
   12,706.88x = 692,206,233.79
5. Step 5: Solve for x
   x = 692,206,233.79/12,706.88
6. Step 6: Final answer
   x = 54,474.94