Finding the Third Proportional to 667,380 and 1,439,760

Step by Step Solution

1. Step 1: Write the proportion equation
   667,380 : 1,439,760 = 1,439,760 : x
2. Step 2: Convert to fraction form
   667,380/1,439,760 = 1,439,760/x
3. Step 3: Cross multiply
   667,380x = 1,439,760 × 1,439,760
4. Step 4: Simplify right side
   667,380x = 2,072,908,857,600
5. Step 5: Solve for x
   x = 2,072,908,857,600/667,380
6. Step 6: Final answer
   x = 3,106,039.82