Finding the Third Proportional to 21,644 and 45,020

Step by Step Solution

1. Step 1: Write the proportion equation
   21,644 : 45,020 = 45,020 : x
2. Step 2: Convert to fraction form
   21,644/45,020 = 45,020/x
3. Step 3: Cross multiply
   21,644x = 45,020 × 45,020
4. Step 4: Simplify right side
   21,644x = 2,026,800,400
5. Step 5: Solve for x
   x = 2,026,800,400/21,644
6. Step 6: Final answer
   x = 93,642.60