Finding the Third Proportional to 111,780 and 236,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,780 : 236,074.50 = 236,074.50 : x
2. Step 2: Convert to fraction form
   111,780/236,074.50 = 236,074.50/x
3. Step 3: Cross multiply
   111,780x = 236,074.50 × 236,074.50
4. Step 4: Simplify right side
   111,780x = 55,731,169,550.25
5. Step 5: Solve for x
   x = 55,731,169,550.25/111,780
6. Step 6: Final answer
   x = 498,579.08