Finding the Third Proportional to 113,449.50 and 238,509

Step by Step Solution

1. Step 1: Write the proportion equation
   113,449.50 : 238,509 = 238,509 : x
2. Step 2: Convert to fraction form
   113,449.50/238,509 = 238,509/x
3. Step 3: Cross multiply
   113,449.50x = 238,509 × 238,509
4. Step 4: Simplify right side
   113,449.50x = 56,886,543,081
5. Step 5: Solve for x
   x = 56,886,543,081/113,449.50
6. Step 6: Final answer
   x = 501,426.12