Finding the Third Proportional to 113,215.50 and 231,346.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,215.50 : 231,346.69 = 231,346.69 : x
2. Step 2: Convert to fraction form
   113,215.50/231,346.69 = 231,346.69/x
3. Step 3: Cross multiply
   113,215.50x = 231,346.69 × 231,346.69
4. Step 4: Simplify right side
   113,215.50x = 53,521,289,817.22
5. Step 5: Solve for x
   x = 53,521,289,817.22/113,215.50
6. Step 6: Final answer
   x = 472,738.18