Finding the Third Proportional to 13,658.63 and 20,584.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,658.63 : 20,584.13 = 20,584.13 : x
2. Step 2: Convert to fraction form
   13,658.63/20,584.13 = 20,584.13/x
3. Step 3: Cross multiply
   13,658.63x = 20,584.13 × 20,584.13
4. Step 4: Simplify right side
   13,658.63x = 423,706,202.02
5. Step 5: Solve for x
   x = 423,706,202.02/13,658.63
6. Step 6: Final answer
   x = 31,021.15