Finding the Third Proportional to 21,192 and 45,123

Step by Step Solution

1. Step 1: Write the proportion equation
   21,192 : 45,123 = 45,123 : x
2. Step 2: Convert to fraction form
   21,192/45,123 = 45,123/x
3. Step 3: Cross multiply
   21,192x = 45,123 × 45,123
4. Step 4: Simplify right side
   21,192x = 2,036,085,129
5. Step 5: Solve for x
   x = 2,036,085,129/21,192
6. Step 6: Final answer
   x = 96,078.01