Finding the Third Proportional to 9,139.25 and 13,776.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.25 : 13,776.25 = 13,776.25 : x
2. Step 2: Convert to fraction form
   9,139.25/13,776.25 = 13,776.25/x
3. Step 3: Cross multiply
   9,139.25x = 13,776.25 × 13,776.25
4. Step 4: Simplify right side
   9,139.25x = 189,785,064.06
5. Step 5: Solve for x
   x = 189,785,064.06/9,139.25
6. Step 6: Final answer
   x = 20,765.93