Finding the Third Proportional to 317,568.50 and 493,849

Step by Step Solution

1. Step 1: Write the proportion equation
   317,568.50 : 493,849 = 493,849 : x
2. Step 2: Convert to fraction form
   317,568.50/493,849 = 493,849/x
3. Step 3: Cross multiply
   317,568.50x = 493,849 × 493,849
4. Step 4: Simplify right side
   317,568.50x = 243,886,834,801
5. Step 5: Solve for x
   x = 243,886,834,801/317,568.50
6. Step 6: Final answer
   x = 767,981.82