Finding the Third Proportional to 601,410 and 1,398,405

Step by Step Solution

1. Step 1: Write the proportion equation
   601,410 : 1,398,405 = 1,398,405 : x
2. Step 2: Convert to fraction form
   601,410/1,398,405 = 1,398,405/x
3. Step 3: Cross multiply
   601,410x = 1,398,405 × 1,398,405
4. Step 4: Simplify right side
   601,410x = 1,955,536,544,025
5. Step 5: Solve for x
   x = 1,955,536,544,025/601,410
6. Step 6: Final answer
   x = 3,251,586.35