Finding the Third Proportional to 223,436 and 478,858

Step by Step Solution

1. Step 1: Write the proportion equation
   223,436 : 478,858 = 478,858 : x
2. Step 2: Convert to fraction form
   223,436/478,858 = 478,858/x
3. Step 3: Cross multiply
   223,436x = 478,858 × 478,858
4. Step 4: Simplify right side
   223,436x = 229,304,984,164
5. Step 5: Solve for x
   x = 229,304,984,164/223,436
6. Step 6: Final answer
   x = 1,026,266.96