Finding the Third Proportional to 1,009,765 and 2,161,405

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,765 : 2,161,405 = 2,161,405 : x
2. Step 2: Convert to fraction form
   1,009,765/2,161,405 = 2,161,405/x
3. Step 3: Cross multiply
   1,009,765x = 2,161,405 × 2,161,405
4. Step 4: Simplify right side
   1,009,765x = 4,671,671,574,025
5. Step 5: Solve for x
   x = 4,671,671,574,025/1,009,765
6. Step 6: Final answer
   x = 4,626,493.86