Finding the Third Proportional to 221,310 and 335,305.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,310 : 335,305.50 = 335,305.50 : x
2. Step 2: Convert to fraction form
   221,310/335,305.50 = 335,305.50/x
3. Step 3: Cross multiply
   221,310x = 335,305.50 × 335,305.50
4. Step 4: Simplify right side
   221,310x = 112,429,778,330.25
5. Step 5: Solve for x
   x = 112,429,778,330.25/221,310
6. Step 6: Final answer
   x = 508,019.42