Finding the Third Proportional to 667,368 and 1,439,720

Step by Step Solution

1. Step 1: Write the proportion equation
   667,368 : 1,439,720 = 1,439,720 : x
2. Step 2: Convert to fraction form
   667,368/1,439,720 = 1,439,720/x
3. Step 3: Cross multiply
   667,368x = 1,439,720 × 1,439,720
4. Step 4: Simplify right side
   667,368x = 2,072,793,678,400
5. Step 5: Solve for x
   x = 2,072,793,678,400/667,368
6. Step 6: Final answer
   x = 3,105,923.09