Finding the Third Proportional to 428,043 and 663,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,043 : 663,700.50 = 663,700.50 : x
2. Step 2: Convert to fraction form
   428,043/663,700.50 = 663,700.50/x
3. Step 3: Cross multiply
   428,043x = 663,700.50 × 663,700.50
4. Step 4: Simplify right side
   428,043x = 440,498,353,700.25
5. Step 5: Solve for x
   x = 440,498,353,700.25/428,043
6. Step 6: Final answer
   x = 1,029,098.37