Finding the Third Proportional to 139,163.50 and 298,004

Step by Step Solution

1. Step 1: Write the proportion equation
   139,163.50 : 298,004 = 298,004 : x
2. Step 2: Convert to fraction form
   139,163.50/298,004 = 298,004/x
3. Step 3: Cross multiply
   139,163.50x = 298,004 × 298,004
4. Step 4: Simplify right side
   139,163.50x = 88,806,384,016
5. Step 5: Solve for x
   x = 88,806,384,016/139,163.50
6. Step 6: Final answer
   x = 638,144.23