Finding the Third Proportional to 47,360 and 72,880

Step by Step Solution

1. Step 1: Write the proportion equation
   47,360 : 72,880 = 72,880 : x
2. Step 2: Convert to fraction form
   47,360/72,880 = 72,880/x
3. Step 3: Cross multiply
   47,360x = 72,880 × 72,880
4. Step 4: Simplify right side
   47,360x = 5,311,494,400
5. Step 5: Solve for x
   x = 5,311,494,400/47,360
6. Step 6: Final answer
   x = 112,151.49