Finding the Third Proportional to 222,106 and 343,540

Step by Step Solution

1. Step 1: Write the proportion equation
   222,106 : 343,540 = 343,540 : x
2. Step 2: Convert to fraction form
   222,106/343,540 = 343,540/x
3. Step 3: Cross multiply
   222,106x = 343,540 × 343,540
4. Step 4: Simplify right side
   222,106x = 118,019,731,600
5. Step 5: Solve for x
   x = 118,019,731,600/222,106
6. Step 6: Final answer
   x = 531,366.70