Finding the Third Proportional to 121,983.15 and 264,329.89

Step by Step Solution

1. Step 1: Write the proportion equation
   121,983.15 : 264,329.89 = 264,329.89 : x
2. Step 2: Convert to fraction form
   121,983.15/264,329.89 = 264,329.89/x
3. Step 3: Cross multiply
   121,983.15x = 264,329.89 × 264,329.89
4. Step 4: Simplify right side
   121,983.15x = 69,870,293,142.90
5. Step 5: Solve for x
   x = 69,870,293,142.90/121,983.15
6. Step 6: Final answer
   x = 572,786.42