Finding the Third Proportional to 20,217 and 42,529

Step by Step Solution

1. Step 1: Write the proportion equation
   20,217 : 42,529 = 42,529 : x
2. Step 2: Convert to fraction form
   20,217/42,529 = 42,529/x
3. Step 3: Cross multiply
   20,217x = 42,529 × 42,529
4. Step 4: Simplify right side
   20,217x = 1,808,715,841
5. Step 5: Solve for x
   x = 1,808,715,841/20,217
6. Step 6: Final answer
   x = 89,465.10