Finding the Third Proportional to 72,860 and 112,405

Step by Step Solution

1. Step 1: Write the proportion equation
   72,860 : 112,405 = 112,405 : x
2. Step 2: Convert to fraction form
   72,860/112,405 = 112,405/x
3. Step 3: Cross multiply
   72,860x = 112,405 × 112,405
4. Step 4: Simplify right side
   72,860x = 12,634,884,025
5. Step 5: Solve for x
   x = 12,634,884,025/72,860
6. Step 6: Final answer
   x = 173,413.18