Finding the Third Proportional to 155,844 and 222,090

Step by Step Solution

1. Step 1: Write the proportion equation
   155,844 : 222,090 = 222,090 : x
2. Step 2: Convert to fraction form
   155,844/222,090 = 222,090/x
3. Step 3: Cross multiply
   155,844x = 222,090 × 222,090
4. Step 4: Simplify right side
   155,844x = 49,323,968,100
5. Step 5: Solve for x
   x = 49,323,968,100/155,844
6. Step 6: Final answer
   x = 316,495.78