Finding the Third Proportional to 18,912 and 25,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,912 : 25,087.50 = 25,087.50 : x
2. Step 2: Convert to fraction form
   18,912/25,087.50 = 25,087.50/x
3. Step 3: Cross multiply
   18,912x = 25,087.50 × 25,087.50
4. Step 4: Simplify right side
   18,912x = 629,382,656.25
5. Step 5: Solve for x
   x = 629,382,656.25/18,912
6. Step 6: Final answer
   x = 33,279.54