Finding the Third Proportional to 222,715.69 and 485,631

Step by Step Solution

1. Step 1: Write the proportion equation
   222,715.69 : 485,631 = 485,631 : x
2. Step 2: Convert to fraction form
   222,715.69/485,631 = 485,631/x
3. Step 3: Cross multiply
   222,715.69x = 485,631 × 485,631
4. Step 4: Simplify right side
   222,715.69x = 235,837,468,161
5. Step 5: Solve for x
   x = 235,837,468,161/222,715.69
6. Step 6: Final answer
   x = 1,058,917.18