Finding the Third Proportional to 658,746 and 1,340,820

Step by Step Solution

1. Step 1: Write the proportion equation
   658,746 : 1,340,820 = 1,340,820 : x
2. Step 2: Convert to fraction form
   658,746/1,340,820 = 1,340,820/x
3. Step 3: Cross multiply
   658,746x = 1,340,820 × 1,340,820
4. Step 4: Simplify right side
   658,746x = 1,797,798,272,400
5. Step 5: Solve for x
   x = 1,797,798,272,400/658,746
6. Step 6: Final answer
   x = 2,729,122.11