Finding the Third Proportional to 139,016.50 and 297,717

Step by Step Solution

1. Step 1: Write the proportion equation
   139,016.50 : 297,717 = 297,717 : x
2. Step 2: Convert to fraction form
   139,016.50/297,717 = 297,717/x
3. Step 3: Cross multiply
   139,016.50x = 297,717 × 297,717
4. Step 4: Simplify right side
   139,016.50x = 88,635,412,089
5. Step 5: Solve for x
   x = 88,635,412,089/139,016.50
6. Step 6: Final answer
   x = 637,589.15