Finding the Third Proportional to 21,078 and 45,155

Step by Step Solution

1. Step 1: Write the proportion equation
   21,078 : 45,155 = 45,155 : x
2. Step 2: Convert to fraction form
   21,078/45,155 = 45,155/x
3. Step 3: Cross multiply
   21,078x = 45,155 × 45,155
4. Step 4: Simplify right side
   21,078x = 2,038,974,025
5. Step 5: Solve for x
   x = 2,038,974,025/21,078
6. Step 6: Final answer
   x = 96,734.70