Finding the Third Proportional to 139,066.50 and 303,510

Step by Step Solution

1. Step 1: Write the proportion equation
   139,066.50 : 303,510 = 303,510 : x
2. Step 2: Convert to fraction form
   139,066.50/303,510 = 303,510/x
3. Step 3: Cross multiply
   139,066.50x = 303,510 × 303,510
4. Step 4: Simplify right side
   139,066.50x = 92,118,320,100
5. Step 5: Solve for x
   x = 92,118,320,100/139,066.50
6. Step 6: Final answer
   x = 662,404.82