Finding the Third Proportional to 111,900 and 248,664

Step by Step Solution

1. Step 1: Write the proportion equation
   111,900 : 248,664 = 248,664 : x
2. Step 2: Convert to fraction form
   111,900/248,664 = 248,664/x
3. Step 3: Cross multiply
   111,900x = 248,664 × 248,664
4. Step 4: Simplify right side
   111,900x = 61,833,784,896
5. Step 5: Solve for x
   x = 61,833,784,896/111,900
6. Step 6: Final answer
   x = 552,580.74