Finding the Third Proportional to 770,040 and 1,689,336

Step by Step Solution

1. Step 1: Write the proportion equation
   770,040 : 1,689,336 = 1,689,336 : x
2. Step 2: Convert to fraction form
   770,040/1,689,336 = 1,689,336/x
3. Step 3: Cross multiply
   770,040x = 1,689,336 × 1,689,336
4. Step 4: Simplify right side
   770,040x = 2,853,856,120,896
5. Step 5: Solve for x
   x = 2,853,856,120,896/770,040
6. Step 6: Final answer
   x = 3,706,114.13