Finding the Third Proportional to 222,722 and 341,139

Step by Step Solution

1. Step 1: Write the proportion equation
   222,722 : 341,139 = 341,139 : x
2. Step 2: Convert to fraction form
   222,722/341,139 = 341,139/x
3. Step 3: Cross multiply
   222,722x = 341,139 × 341,139
4. Step 4: Simplify right side
   222,722x = 116,375,817,321
5. Step 5: Solve for x
   x = 116,375,817,321/222,722
6. Step 6: Final answer
   x = 522,516.04