Finding the Third Proportional to 11,354.06 and 17,720.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,354.06 : 17,720.72 = 17,720.72 : x
2. Step 2: Convert to fraction form
   11,354.06/17,720.72 = 17,720.72/x
3. Step 3: Cross multiply
   11,354.06x = 17,720.72 × 17,720.72
4. Step 4: Simplify right side
   11,354.06x = 314,023,873.02
5. Step 5: Solve for x
   x = 314,023,873.02/11,354.06
6. Step 6: Final answer
   x = 27,657.40