Finding the Third Proportional to 82,158 and 117,405

Step by Step Solution

1. Step 1: Write the proportion equation
   82,158 : 117,405 = 117,405 : x
2. Step 2: Convert to fraction form
   82,158/117,405 = 117,405/x
3. Step 3: Cross multiply
   82,158x = 117,405 × 117,405
4. Step 4: Simplify right side
   82,158x = 13,783,934,025
5. Step 5: Solve for x
   x = 13,783,934,025/82,158
6. Step 6: Final answer
   x = 167,773.49