Finding the Third Proportional to 72,869 and 156,915

Step by Step Solution

1. Step 1: Write the proportion equation
   72,869 : 156,915 = 156,915 : x
2. Step 2: Convert to fraction form
   72,869/156,915 = 156,915/x
3. Step 3: Cross multiply
   72,869x = 156,915 × 156,915
4. Step 4: Simplify right side
   72,869x = 24,622,317,225
5. Step 5: Solve for x
   x = 24,622,317,225/72,869
6. Step 6: Final answer
   x = 337,898.38