Finding the Third Proportional to 11,639.08 and 18,442.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,639.08 : 18,442.49 = 18,442.49 : x
2. Step 2: Convert to fraction form
   11,639.08/18,442.49 = 18,442.49/x
3. Step 3: Cross multiply
   11,639.08x = 18,442.49 × 18,442.49
4. Step 4: Simplify right side
   11,639.08x = 340,125,428.03
5. Step 5: Solve for x
   x = 340,125,428.03/11,639.08
6. Step 6: Final answer
   x = 29,222.70