Finding the Third Proportional to 21,105 and 45,315

Step by Step Solution

1. Step 1: Write the proportion equation
   21,105 : 45,315 = 45,315 : x
2. Step 2: Convert to fraction form
   21,105/45,315 = 45,315/x
3. Step 3: Cross multiply
   21,105x = 45,315 × 45,315
4. Step 4: Simplify right side
   21,105x = 2,053,449,225
5. Step 5: Solve for x
   x = 2,053,449,225/21,105
6. Step 6: Final answer
   x = 97,296.81