Finding the Third Proportional to 333,274.50 and 678,942

Step by Step Solution

1. Step 1: Write the proportion equation
   333,274.50 : 678,942 = 678,942 : x
2. Step 2: Convert to fraction form
   333,274.50/678,942 = 678,942/x
3. Step 3: Cross multiply
   333,274.50x = 678,942 × 678,942
4. Step 4: Simplify right side
   333,274.50x = 460,962,239,364
5. Step 5: Solve for x
   x = 460,962,239,364/333,274.50
6. Step 6: Final answer
   x = 1,383,130.84