Finding the Third Proportional to 18,123 and 25,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,123 : 25,521.50 = 25,521.50 : x
2. Step 2: Convert to fraction form
   18,123/25,521.50 = 25,521.50/x
3. Step 3: Cross multiply
   18,123x = 25,521.50 × 25,521.50
4. Step 4: Simplify right side
   18,123x = 651,346,962.25
5. Step 5: Solve for x
   x = 651,346,962.25/18,123
6. Step 6: Final answer
   x = 35,940.35