Finding the Third Proportional to 155,840 and 222,084

Step by Step Solution

1. Step 1: Write the proportion equation
   155,840 : 222,084 = 222,084 : x
2. Step 2: Convert to fraction form
   155,840/222,084 = 222,084/x
3. Step 3: Cross multiply
   155,840x = 222,084 × 222,084
4. Step 4: Simplify right side
   155,840x = 49,321,303,056
5. Step 5: Solve for x
   x = 49,321,303,056/155,840
6. Step 6: Final answer
   x = 316,486.80