Finding the Third Proportional to 13,621.50 and 18,488.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,621.50 : 18,488.25 = 18,488.25 : x
2. Step 2: Convert to fraction form
   13,621.50/18,488.25 = 18,488.25/x
3. Step 3: Cross multiply
   13,621.50x = 18,488.25 × 18,488.25
4. Step 4: Simplify right side
   13,621.50x = 341,815,388.06
5. Step 5: Solve for x
   x = 341,815,388.06/13,621.50
6. Step 6: Final answer
   x = 25,093.81