Finding the Third Proportional to 10,156 and 21,122

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156 : 21,122 = 21,122 : x
2. Step 2: Convert to fraction form
   10,156/21,122 = 21,122/x
3. Step 3: Cross multiply
   10,156x = 21,122 × 21,122
4. Step 4: Simplify right side
   10,156x = 446,138,884
5. Step 5: Solve for x
   x = 446,138,884/10,156
6. Step 6: Final answer
   x = 43,928.60