Finding the Third Proportional to 221,238 and 479,938.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,238 : 479,938.50 = 479,938.50 : x
2. Step 2: Convert to fraction form
   221,238/479,938.50 = 479,938.50/x
3. Step 3: Cross multiply
   221,238x = 479,938.50 × 479,938.50
4. Step 4: Simplify right side
   221,238x = 230,340,963,782.25
5. Step 5: Solve for x
   x = 230,340,963,782.25/221,238
6. Step 6: Final answer
   x = 1,041,145.57