Finding the Third Proportional to 72,603 and 155,711

Step by Step Solution

1. Step 1: Write the proportion equation
   72,603 : 155,711 = 155,711 : x
2. Step 2: Convert to fraction form
   72,603/155,711 = 155,711/x
3. Step 3: Cross multiply
   72,603x = 155,711 × 155,711
4. Step 4: Simplify right side
   72,603x = 24,245,915,521
5. Step 5: Solve for x
   x = 24,245,915,521/72,603
6. Step 6: Final answer
   x = 333,951.98