Finding the Third Proportional to 10,216 and 20,862

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216 : 20,862 = 20,862 : x
2. Step 2: Convert to fraction form
   10,216/20,862 = 20,862/x
3. Step 3: Cross multiply
   10,216x = 20,862 × 20,862
4. Step 4: Simplify right side
   10,216x = 435,223,044
5. Step 5: Solve for x
   x = 435,223,044/10,216
6. Step 6: Final answer
   x = 42,602.10