Finding the Third Proportional to 485,120 and 1,020,510

Step by Step Solution

1. Step 1: Write the proportion equation
   485,120 : 1,020,510 = 1,020,510 : x
2. Step 2: Convert to fraction form
   485,120/1,020,510 = 1,020,510/x
3. Step 3: Cross multiply
   485,120x = 1,020,510 × 1,020,510
4. Step 4: Simplify right side
   485,120x = 1,041,440,660,100
5. Step 5: Solve for x
   x = 1,041,440,660,100/485,120
6. Step 6: Final answer
   x = 2,146,769.17