Finding the Third Proportional to 250,238 and 521,185

Step by Step Solution

1. Step 1: Write the proportion equation
   250,238 : 521,185 = 521,185 : x
2. Step 2: Convert to fraction form
   250,238/521,185 = 521,185/x
3. Step 3: Cross multiply
   250,238x = 521,185 × 521,185
4. Step 4: Simplify right side
   250,238x = 271,633,804,225
5. Step 5: Solve for x
   x = 271,633,804,225/250,238
6. Step 6: Final answer
   x = 1,085,501.82