Finding the Third Proportional to 220,738.50 and 476,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   220,738.50 : 476,758.50 = 476,758.50 : x
2. Step 2: Convert to fraction form
   220,738.50/476,758.50 = 476,758.50/x
3. Step 3: Cross multiply
   220,738.50x = 476,758.50 × 476,758.50
4. Step 4: Simplify right side
   220,738.50x = 227,298,667,322.25
5. Step 5: Solve for x
   x = 227,298,667,322.25/220,738.50
6. Step 6: Final answer
   x = 1,029,719.18