Finding the Third Proportional to 218,728 and 467,786

Step by Step Solution

1. Step 1: Write the proportion equation
   218,728 : 467,786 = 467,786 : x
2. Step 2: Convert to fraction form
   218,728/467,786 = 467,786/x
3. Step 3: Cross multiply
   218,728x = 467,786 × 467,786
4. Step 4: Simplify right side
   218,728x = 218,823,741,796
5. Step 5: Solve for x
   x = 218,823,741,796/218,728
6. Step 6: Final answer
   x = 1,000,437.72