Finding the Third Proportional to 218,368 and 476,672

Step by Step Solution

1. Step 1: Write the proportion equation
   218,368 : 476,672 = 476,672 : x
2. Step 2: Convert to fraction form
   218,368/476,672 = 476,672/x
3. Step 3: Cross multiply
   218,368x = 476,672 × 476,672
4. Step 4: Simplify right side
   218,368x = 227,216,195,584
5. Step 5: Solve for x
   x = 227,216,195,584/218,368
6. Step 6: Final answer
   x = 1,040,519.65