Finding the Third Proportional to 819,145.50 and 1,282,200

Step by Step Solution

1. Step 1: Write the proportion equation
   819,145.50 : 1,282,200 = 1,282,200 : x
2. Step 2: Convert to fraction form
   819,145.50/1,282,200 = 1,282,200/x
3. Step 3: Cross multiply
   819,145.50x = 1,282,200 × 1,282,200
4. Step 4: Simplify right side
   819,145.50x = 1,644,036,840,000
5. Step 5: Solve for x
   x = 1,644,036,840,000/819,145.50
6. Step 6: Final answer
   x = 2,007,014.43