Finding the Third Proportional to 221,242 and 520,054

Step by Step Solution

1. Step 1: Write the proportion equation
   221,242 : 520,054 = 520,054 : x
2. Step 2: Convert to fraction form
   221,242/520,054 = 520,054/x
3. Step 3: Cross multiply
   221,242x = 520,054 × 520,054
4. Step 4: Simplify right side
   221,242x = 270,456,162,916
5. Step 5: Solve for x
   x = 270,456,162,916/221,242
6. Step 6: Final answer
   x = 1,222,444.94