Finding the Third Proportional to 12,553.59 and 17,213.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,553.59 : 17,213.77 = 17,213.77 : x
2. Step 2: Convert to fraction form
   12,553.59/17,213.77 = 17,213.77/x
3. Step 3: Cross multiply
   12,553.59x = 17,213.77 × 17,213.77
4. Step 4: Simplify right side
   12,553.59x = 296,313,726.99
5. Step 5: Solve for x
   x = 296,313,726.99/12,553.59
6. Step 6: Final answer
   x = 23,603.90