Finding the Third Proportional to 18,868.50 and 28,307.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,868.50 : 28,307.25 = 28,307.25 : x
2. Step 2: Convert to fraction form
   18,868.50/28,307.25 = 28,307.25/x
3. Step 3: Cross multiply
   18,868.50x = 28,307.25 × 28,307.25
4. Step 4: Simplify right side
   18,868.50x = 801,300,402.56
5. Step 5: Solve for x
   x = 801,300,402.56/18,868.50
6. Step 6: Final answer
   x = 42,467.63