Finding the Third Proportional to 21,876 and 45,210

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876 : 45,210 = 45,210 : x
2. Step 2: Convert to fraction form
   21,876/45,210 = 45,210/x
3. Step 3: Cross multiply
   21,876x = 45,210 × 45,210
4. Step 4: Simplify right side
   21,876x = 2,043,944,100
5. Step 5: Solve for x
   x = 2,043,944,100/21,876
6. Step 6: Final answer
   x = 93,433.17