Finding the Third Proportional to 780,920 and 1,583,570

Step by Step Solution

1. Step 1: Write the proportion equation
   780,920 : 1,583,570 = 1,583,570 : x
2. Step 2: Convert to fraction form
   780,920/1,583,570 = 1,583,570/x
3. Step 3: Cross multiply
   780,920x = 1,583,570 × 1,583,570
4. Step 4: Simplify right side
   780,920x = 2,507,693,944,900
5. Step 5: Solve for x
   x = 2,507,693,944,900/780,920
6. Step 6: Final answer
   x = 3,211,204.66