Finding the Third Proportional to 220,828 and 476,647.50

Step by Step Solution

1. Step 1: Write the proportion equation
   220,828 : 476,647.50 = 476,647.50 : x
2. Step 2: Convert to fraction form
   220,828/476,647.50 = 476,647.50/x
3. Step 3: Cross multiply
   220,828x = 476,647.50 × 476,647.50
4. Step 4: Simplify right side
   220,828x = 227,192,839,256.25
5. Step 5: Solve for x
   x = 227,192,839,256.25/220,828
6. Step 6: Final answer
   x = 1,028,822.61