Finding the Third Proportional to 779,168 and 1,620,688

Step by Step Solution

1. Step 1: Write the proportion equation
   779,168 : 1,620,688 = 1,620,688 : x
2. Step 2: Convert to fraction form
   779,168/1,620,688 = 1,620,688/x
3. Step 3: Cross multiply
   779,168x = 1,620,688 × 1,620,688
4. Step 4: Simplify right side
   779,168x = 2,626,629,593,344
5. Step 5: Solve for x
   x = 2,626,629,593,344/779,168
6. Step 6: Final answer
   x = 3,371,069.65