Finding the Third Proportional to 1,131,257 and 1,582,405

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,257 : 1,582,405 = 1,582,405 : x
2. Step 2: Convert to fraction form
   1,131,257/1,582,405 = 1,582,405/x
3. Step 3: Cross multiply
   1,131,257x = 1,582,405 × 1,582,405
4. Step 4: Simplify right side
   1,131,257x = 2,504,005,584,025
5. Step 5: Solve for x
   x = 2,504,005,584,025/1,131,257
6. Step 6: Final answer
   x = 2,213,471.90