Finding the Third Proportional to 405,738 and 867,760

Step by Step Solution

1. Step 1: Write the proportion equation
   405,738 : 867,760 = 867,760 : x
2. Step 2: Convert to fraction form
   405,738/867,760 = 867,760/x
3. Step 3: Cross multiply
   405,738x = 867,760 × 867,760
4. Step 4: Simplify right side
   405,738x = 753,007,417,600
5. Step 5: Solve for x
   x = 753,007,417,600/405,738
6. Step 6: Final answer
   x = 1,855,895.72