Finding the Third Proportional to 112,409 and 235,203.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,409 : 235,203.50 = 235,203.50 : x
2. Step 2: Convert to fraction form
   112,409/235,203.50 = 235,203.50/x
3. Step 3: Cross multiply
   112,409x = 235,203.50 × 235,203.50
4. Step 4: Simplify right side
   112,409x = 55,320,686,412.25
5. Step 5: Solve for x
   x = 55,320,686,412.25/112,409
6. Step 6: Final answer
   x = 492,137.52