Finding the Third Proportional to 140,770 and 298,812

Step by Step Solution

1. Step 1: Write the proportion equation
   140,770 : 298,812 = 298,812 : x
2. Step 2: Convert to fraction form
   140,770/298,812 = 298,812/x
3. Step 3: Cross multiply
   140,770x = 298,812 × 298,812
4. Step 4: Simplify right side
   140,770x = 89,288,611,344
5. Step 5: Solve for x
   x = 89,288,611,344/140,770
6. Step 6: Final answer
   x = 634,287.22