Finding the Third Proportional to 73,978 and 159,620

Step by Step Solution

1. Step 1: Write the proportion equation
   73,978 : 159,620 = 159,620 : x
2. Step 2: Convert to fraction form
   73,978/159,620 = 159,620/x
3. Step 3: Cross multiply
   73,978x = 159,620 × 159,620
4. Step 4: Simplify right side
   73,978x = 25,478,544,400
5. Step 5: Solve for x
   x = 25,478,544,400/73,978
6. Step 6: Final answer
   x = 344,407.05