Finding the Third Proportional to 13,623.19 and 18,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,623.19 : 18,490.78 = 18,490.78 : x
2. Step 2: Convert to fraction form
   13,623.19/18,490.78 = 18,490.78/x
3. Step 3: Cross multiply
   13,623.19x = 18,490.78 × 18,490.78
4. Step 4: Simplify right side
   13,623.19x = 341,908,991.24
5. Step 5: Solve for x
   x = 341,908,991.24/13,623.19
6. Step 6: Final answer
   x = 25,097.58