Finding the Third Proportional to 21,156 and 45,308

Step by Step Solution

1. Step 1: Write the proportion equation
   21,156 : 45,308 = 45,308 : x
2. Step 2: Convert to fraction form
   21,156/45,308 = 45,308/x
3. Step 3: Cross multiply
   21,156x = 45,308 × 45,308
4. Step 4: Simplify right side
   21,156x = 2,052,814,864
5. Step 5: Solve for x
   x = 2,052,814,864/21,156
6. Step 6: Final answer
   x = 97,032.28