Finding the Third Proportional to 223,442 and 478,870

Step by Step Solution

1. Step 1: Write the proportion equation
   223,442 : 478,870 = 478,870 : x
2. Step 2: Convert to fraction form
   223,442/478,870 = 478,870/x
3. Step 3: Cross multiply
   223,442x = 478,870 × 478,870
4. Step 4: Simplify right side
   223,442x = 229,316,476,900
5. Step 5: Solve for x
   x = 229,316,476,900/223,442
6. Step 6: Final answer
   x = 1,026,290.84