Finding the Third Proportional to 10,427 and 21,719

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427 : 21,719 = 21,719 : x
2. Step 2: Convert to fraction form
   10,427/21,719 = 21,719/x
3. Step 3: Cross multiply
   10,427x = 21,719 × 21,719
4. Step 4: Simplify right side
   10,427x = 471,714,961
5. Step 5: Solve for x
   x = 471,714,961/10,427
6. Step 6: Final answer
   x = 45,239.76