Finding the Third Proportional to 47,160 and 72,380

Step by Step Solution

1. Step 1: Write the proportion equation
   47,160 : 72,380 = 72,380 : x
2. Step 2: Convert to fraction form
   47,160/72,380 = 72,380/x
3. Step 3: Cross multiply
   47,160x = 72,380 × 72,380
4. Step 4: Simplify right side
   47,160x = 5,238,864,400
5. Step 5: Solve for x
   x = 5,238,864,400/47,160
6. Step 6: Final answer
   x = 111,087.03