Finding the Third Proportional to 123,087 and 263,670

Step by Step Solution

1. Step 1: Write the proportion equation
   123,087 : 263,670 = 263,670 : x
2. Step 2: Convert to fraction form
   123,087/263,670 = 263,670/x
3. Step 3: Cross multiply
   123,087x = 263,670 × 263,670
4. Step 4: Simplify right side
   123,087x = 69,521,868,900
5. Step 5: Solve for x
   x = 69,521,868,900/123,087
6. Step 6: Final answer
   x = 564,818.94