Finding the Third Proportional to 10,820.25 and 17,155.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,820.25 : 17,155.13 = 17,155.13 : x
2. Step 2: Convert to fraction form
   10,820.25/17,155.13 = 17,155.13/x
3. Step 3: Cross multiply
   10,820.25x = 17,155.13 × 17,155.13
4. Step 4: Simplify right side
   10,820.25x = 294,298,313.77
5. Step 5: Solve for x
   x = 294,298,313.77/10,820.25
6. Step 6: Final answer
   x = 27,198.85