Finding the Third Proportional to 105,450 and 248,920

Step by Step Solution

1. Step 1: Write the proportion equation
   105,450 : 248,920 = 248,920 : x
2. Step 2: Convert to fraction form
   105,450/248,920 = 248,920/x
3. Step 3: Cross multiply
   105,450x = 248,920 × 248,920
4. Step 4: Simplify right side
   105,450x = 61,961,166,400
5. Step 5: Solve for x
   x = 61,961,166,400/105,450
6. Step 6: Final answer
   x = 587,588.11