Finding the Third Proportional to 648,779 and 1,393,453

Step by Step Solution

1. Step 1: Write the proportion equation
   648,779 : 1,393,453 = 1,393,453 : x
2. Step 2: Convert to fraction form
   648,779/1,393,453 = 1,393,453/x
3. Step 3: Cross multiply
   648,779x = 1,393,453 × 1,393,453
4. Step 4: Simplify right side
   648,779x = 1,941,711,263,209
5. Step 5: Solve for x
   x = 1,941,711,263,209/648,779
6. Step 6: Final answer
   x = 2,992,870.09