Finding the Third Proportional to 139,004.50 and 303,498

Step by Step Solution

1. Step 1: Write the proportion equation
   139,004.50 : 303,498 = 303,498 : x
2. Step 2: Convert to fraction form
   139,004.50/303,498 = 303,498/x
3. Step 3: Cross multiply
   139,004.50x = 303,498 × 303,498
4. Step 4: Simplify right side
   139,004.50x = 92,111,036,004
5. Step 5: Solve for x
   x = 92,111,036,004/139,004.50
6. Step 6: Final answer
   x = 662,647.87