Finding the Third Proportional to 123,047 and 263,155

Step by Step Solution

1. Step 1: Write the proportion equation
   123,047 : 263,155 = 263,155 : x
2. Step 2: Convert to fraction form
   123,047/263,155 = 263,155/x
3. Step 3: Cross multiply
   123,047x = 263,155 × 263,155
4. Step 4: Simplify right side
   123,047x = 69,250,554,025
5. Step 5: Solve for x
   x = 69,250,554,025/123,047
6. Step 6: Final answer
   x = 562,797.58