Finding the Third Proportional to 139,958 and 298,604

Step by Step Solution

1. Step 1: Write the proportion equation
   139,958 : 298,604 = 298,604 : x
2. Step 2: Convert to fraction form
   139,958/298,604 = 298,604/x
3. Step 3: Cross multiply
   139,958x = 298,604 × 298,604
4. Step 4: Simplify right side
   139,958x = 89,164,348,816
5. Step 5: Solve for x
   x = 89,164,348,816/139,958
6. Step 6: Final answer
   x = 637,079.33