Finding the Third Proportional to 222,584 and 345,108

Step by Step Solution

1. Step 1: Write the proportion equation
   222,584 : 345,108 = 345,108 : x
2. Step 2: Convert to fraction form
   222,584/345,108 = 345,108/x
3. Step 3: Cross multiply
   222,584x = 345,108 × 345,108
4. Step 4: Simplify right side
   222,584x = 119,099,531,664
5. Step 5: Solve for x
   x = 119,099,531,664/222,584
6. Step 6: Final answer
   x = 535,076.79