Finding the Third Proportional to 241,688.50 and 518,368

Step by Step Solution

1. Step 1: Write the proportion equation
   241,688.50 : 518,368 = 518,368 : x
2. Step 2: Convert to fraction form
   241,688.50/518,368 = 518,368/x
3. Step 3: Cross multiply
   241,688.50x = 518,368 × 518,368
4. Step 4: Simplify right side
   241,688.50x = 268,705,383,424
5. Step 5: Solve for x
   x = 268,705,383,424/241,688.50
6. Step 6: Final answer
   x = 1,111,783.90