Finding the Third Proportional to 115,222 and 238,442

Step by Step Solution

1. Step 1: Write the proportion equation
   115,222 : 238,442 = 238,442 : x
2. Step 2: Convert to fraction form
   115,222/238,442 = 238,442/x
3. Step 3: Cross multiply
   115,222x = 238,442 × 238,442
4. Step 4: Simplify right side
   115,222x = 56,854,587,364
5. Step 5: Solve for x
   x = 56,854,587,364/115,222
6. Step 6: Final answer
   x = 493,435.17