Finding the Third Proportional to 20,261 and 28,510

Step by Step Solution

1. Step 1: Write the proportion equation
   20,261 : 28,510 = 28,510 : x
2. Step 2: Convert to fraction form
   20,261/28,510 = 28,510/x
3. Step 3: Cross multiply
   20,261x = 28,510 × 28,510
4. Step 4: Simplify right side
   20,261x = 812,820,100
5. Step 5: Solve for x
   x = 812,820,100/20,261
6. Step 6: Final answer
   x = 40,117.47