Finding the Third Proportional to 155,858 and 222,871

Step by Step Solution

1. Step 1: Write the proportion equation
   155,858 : 222,871 = 222,871 : x
2. Step 2: Convert to fraction form
   155,858/222,871 = 222,871/x
3. Step 3: Cross multiply
   155,858x = 222,871 × 222,871
4. Step 4: Simplify right side
   155,858x = 49,671,482,641
5. Step 5: Solve for x
   x = 49,671,482,641/155,858
6. Step 6: Final answer
   x = 318,697.04