Finding the Third Proportional to 21,369 and 28,573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,369 : 28,573.50 = 28,573.50 : x
2. Step 2: Convert to fraction form
   21,369/28,573.50 = 28,573.50/x
3. Step 3: Cross multiply
   21,369x = 28,573.50 × 28,573.50
4. Step 4: Simplify right side
   21,369x = 816,444,902.25
5. Step 5: Solve for x
   x = 816,444,902.25/21,369
6. Step 6: Final answer
   x = 38,206.98