Finding the Third Proportional to 20,523 and 42,510

Step by Step Solution

1. Step 1: Write the proportion equation
   20,523 : 42,510 = 42,510 : x
2. Step 2: Convert to fraction form
   20,523/42,510 = 42,510/x
3. Step 3: Cross multiply
   20,523x = 42,510 × 42,510
4. Step 4: Simplify right side
   20,523x = 1,807,100,100
5. Step 5: Solve for x
   x = 1,807,100,100/20,523
6. Step 6: Final answer
   x = 88,052.43