Finding the Third Proportional to 13,630.78 and 18,409.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.78 : 18,409.78 = 18,409.78 : x
2. Step 2: Convert to fraction form
   13,630.78/18,409.78 = 18,409.78/x
3. Step 3: Cross multiply
   13,630.78x = 18,409.78 × 18,409.78
4. Step 4: Simplify right side
   13,630.78x = 338,920,045.67
5. Step 5: Solve for x
   x = 338,920,045.67/13,630.78
6. Step 6: Final answer
   x = 24,864.32