Finding the Third Proportional to 15,420 and 23,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,420 : 23,818.50 = 23,818.50 : x
2. Step 2: Convert to fraction form
   15,420/23,818.50 = 23,818.50/x
3. Step 3: Cross multiply
   15,420x = 23,818.50 × 23,818.50
4. Step 4: Simplify right side
   15,420x = 567,320,942.25
5. Step 5: Solve for x
   x = 567,320,942.25/15,420
6. Step 6: Final answer
   x = 36,791.24