Finding the Third Proportional to 489,640 and 1,038,064

Step by Step Solution

1. Step 1: Write the proportion equation
   489,640 : 1,038,064 = 1,038,064 : x
2. Step 2: Convert to fraction form
   489,640/1,038,064 = 1,038,064/x
3. Step 3: Cross multiply
   489,640x = 1,038,064 × 1,038,064
4. Step 4: Simplify right side
   489,640x = 1,077,576,868,096
5. Step 5: Solve for x
   x = 1,077,576,868,096/489,640
6. Step 6: Final answer
   x = 2,200,753.35