Finding the Third Proportional to 770,266 and 1,662,320

Step by Step Solution

1. Step 1: Write the proportion equation
   770,266 : 1,662,320 = 1,662,320 : x
2. Step 2: Convert to fraction form
   770,266/1,662,320 = 1,662,320/x
3. Step 3: Cross multiply
   770,266x = 1,662,320 × 1,662,320
4. Step 4: Simplify right side
   770,266x = 2,763,307,782,400
5. Step 5: Solve for x
   x = 2,763,307,782,400/770,266
6. Step 6: Final answer
   x = 3,587,472.10