Finding the Third Proportional to 208,988 and 298,740

Step by Step Solution

1. Step 1: Write the proportion equation
   208,988 : 298,740 = 298,740 : x
2. Step 2: Convert to fraction form
   208,988/298,740 = 298,740/x
3. Step 3: Cross multiply
   208,988x = 298,740 × 298,740
4. Step 4: Simplify right side
   208,988x = 89,245,587,600
5. Step 5: Solve for x
   x = 89,245,587,600/208,988
6. Step 6: Final answer
   x = 427,036.90