Finding the Third Proportional to 72,508 and 148,920

Step by Step Solution

1. Step 1: Write the proportion equation
   72,508 : 148,920 = 148,920 : x
2. Step 2: Convert to fraction form
   72,508/148,920 = 148,920/x
3. Step 3: Cross multiply
   72,508x = 148,920 × 148,920
4. Step 4: Simplify right side
   72,508x = 22,177,166,400
5. Step 5: Solve for x
   x = 22,177,166,400/72,508
6. Step 6: Final answer
   x = 305,858.20