Finding the Third Proportional to 816,280 and 1,287,024

Step by Step Solution

1. Step 1: Write the proportion equation
   816,280 : 1,287,024 = 1,287,024 : x
2. Step 2: Convert to fraction form
   816,280/1,287,024 = 1,287,024/x
3. Step 3: Cross multiply
   816,280x = 1,287,024 × 1,287,024
4. Step 4: Simplify right side
   816,280x = 1,656,430,776,576
5. Step 5: Solve for x
   x = 1,656,430,776,576/816,280
6. Step 6: Final answer
   x = 2,029,243.37