Finding the Third Proportional to 218,718 and 476,964

Step by Step Solution

1. Step 1: Write the proportion equation
   218,718 : 476,964 = 476,964 : x
2. Step 2: Convert to fraction form
   218,718/476,964 = 476,964/x
3. Step 3: Cross multiply
   218,718x = 476,964 × 476,964
4. Step 4: Simplify right side
   218,718x = 227,494,657,296
5. Step 5: Solve for x
   x = 227,494,657,296/218,718
6. Step 6: Final answer
   x = 1,040,127.73