Finding the Third Proportional to 21,124.50 and 39,587.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,124.50 : 39,587.25 = 39,587.25 : x
2. Step 2: Convert to fraction form
   21,124.50/39,587.25 = 39,587.25/x
3. Step 3: Cross multiply
   21,124.50x = 39,587.25 × 39,587.25
4. Step 4: Simplify right side
   21,124.50x = 1,567,150,362.56
5. Step 5: Solve for x
   x = 1,567,150,362.56/21,124.50
6. Step 6: Final answer
   x = 74,186.39