Finding the Third Proportional to 258,936.50 and 553,852

Step by Step Solution

1. Step 1: Write the proportion equation
   258,936.50 : 553,852 = 553,852 : x
2. Step 2: Convert to fraction form
   258,936.50/553,852 = 553,852/x
3. Step 3: Cross multiply
   258,936.50x = 553,852 × 553,852
4. Step 4: Simplify right side
   258,936.50x = 306,752,037,904
5. Step 5: Solve for x
   x = 306,752,037,904/258,936.50
6. Step 6: Final answer
   x = 1,184,661.25