Finding the Third Proportional to 298,990.50 and 654,042

Step by Step Solution

1. Step 1: Write the proportion equation
   298,990.50 : 654,042 = 654,042 : x
2. Step 2: Convert to fraction form
   298,990.50/654,042 = 654,042/x
3. Step 3: Cross multiply
   298,990.50x = 654,042 × 654,042
4. Step 4: Simplify right side
   298,990.50x = 427,770,937,764
5. Step 5: Solve for x
   x = 427,770,937,764/298,990.50
6. Step 6: Final answer
   x = 1,430,717.49