Finding the Third Proportional to 31,800 and 73,940

Step by Step Solution

1. Step 1: Write the proportion equation
   31,800 : 73,940 = 73,940 : x
2. Step 2: Convert to fraction form
   31,800/73,940 = 73,940/x
3. Step 3: Cross multiply
   31,800x = 73,940 × 73,940
4. Step 4: Simplify right side
   31,800x = 5,467,123,600
5. Step 5: Solve for x
   x = 5,467,123,600/31,800
6. Step 6: Final answer
   x = 171,922.13