Finding the Third Proportional to 33,478 and 72,140

Step by Step Solution

1. Step 1: Write the proportion equation
   33,478 : 72,140 = 72,140 : x
2. Step 2: Convert to fraction form
   33,478/72,140 = 72,140/x
3. Step 3: Cross multiply
   33,478x = 72,140 × 72,140
4. Step 4: Simplify right side
   33,478x = 5,204,179,600
5. Step 5: Solve for x
   x = 5,204,179,600/33,478
6. Step 6: Final answer
   x = 155,450.73