Finding the Third Proportional to 21,356 and 45,172

Step by Step Solution

1. Step 1: Write the proportion equation
   21,356 : 45,172 = 45,172 : x
2. Step 2: Convert to fraction form
   21,356/45,172 = 45,172/x
3. Step 3: Cross multiply
   21,356x = 45,172 × 45,172
4. Step 4: Simplify right side
   21,356x = 2,040,509,584
5. Step 5: Solve for x
   x = 2,040,509,584/21,356
6. Step 6: Final answer
   x = 95,547.37