Finding the Third Proportional to 222,904 and 434,648

Step by Step Solution

1. Step 1: Write the proportion equation
   222,904 : 434,648 = 434,648 : x
2. Step 2: Convert to fraction form
   222,904/434,648 = 434,648/x
3. Step 3: Cross multiply
   222,904x = 434,648 × 434,648
4. Step 4: Simplify right side
   222,904x = 188,918,883,904
5. Step 5: Solve for x
   x = 188,918,883,904/222,904
6. Step 6: Final answer
   x = 847,534.74