Finding the Third Proportional to 143,386 and 222,918

Step by Step Solution

1. Step 1: Write the proportion equation
   143,386 : 222,918 = 222,918 : x
2. Step 2: Convert to fraction form
   143,386/222,918 = 222,918/x
3. Step 3: Cross multiply
   143,386x = 222,918 × 222,918
4. Step 4: Simplify right side
   143,386x = 49,692,434,724
5. Step 5: Solve for x
   x = 49,692,434,724/143,386
6. Step 6: Final answer
   x = 346,564.06