Finding the Third Proportional to 11,212.88 and 17,591.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,212.88 : 17,591.91 = 17,591.91 : x
2. Step 2: Convert to fraction form
   11,212.88/17,591.91 = 17,591.91/x
3. Step 3: Cross multiply
   11,212.88x = 17,591.91 × 17,591.91
4. Step 4: Simplify right side
   11,212.88x = 309,475,165.51
5. Step 5: Solve for x
   x = 309,475,165.51/11,212.88
6. Step 6: Final answer
   x = 27,599.98