Finding the Third Proportional to 11,836.13 and 17,580.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,836.13 : 17,580.80 = 17,580.80 : x
2. Step 2: Convert to fraction form
   11,836.13/17,580.80 = 17,580.80/x
3. Step 3: Cross multiply
   11,836.13x = 17,580.80 × 17,580.80
4. Step 4: Simplify right side
   11,836.13x = 309,084,418.76
5. Step 5: Solve for x
   x = 309,084,418.76/11,836.13
6. Step 6: Final answer
   x = 26,113.65