Finding the Third Proportional to 11,642.63 and 18,443.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.63 : 18,443.67 = 18,443.67 : x
2. Step 2: Convert to fraction form
   11,642.63/18,443.67 = 18,443.67/x
3. Step 3: Cross multiply
   11,642.63x = 18,443.67 × 18,443.67
4. Step 4: Simplify right side
   11,642.63x = 340,169,032.23
5. Step 5: Solve for x
   x = 340,169,032.23/11,642.63
6. Step 6: Final answer
   x = 29,217.55