Finding the Third Proportional to 11,876.25 and 18,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,876.25 : 18,388.50 = 18,388.50 : x
2. Step 2: Convert to fraction form
   11,876.25/18,388.50 = 18,388.50/x
3. Step 3: Cross multiply
   11,876.25x = 18,388.50 × 18,388.50
4. Step 4: Simplify right side
   11,876.25x = 338,136,932.25
5. Step 5: Solve for x
   x = 338,136,932.25/11,876.25
6. Step 6: Final answer
   x = 28,471.69