Finding the Third Proportional to 113,220 and 231,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,220 : 231,355.50 = 231,355.50 : x
2. Step 2: Convert to fraction form
   113,220/231,355.50 = 231,355.50/x
3. Step 3: Cross multiply
   113,220x = 231,355.50 × 231,355.50
4. Step 4: Simplify right side
   113,220x = 53,525,367,380.25
5. Step 5: Solve for x
   x = 53,525,367,380.25/113,220
6. Step 6: Final answer
   x = 472,755.41