Finding the Third Proportional to 757,628 and 1,683,420

Step by Step Solution

1. Step 1: Write the proportion equation
   757,628 : 1,683,420 = 1,683,420 : x
2. Step 2: Convert to fraction form
   757,628/1,683,420 = 1,683,420/x
3. Step 3: Cross multiply
   757,628x = 1,683,420 × 1,683,420
4. Step 4: Simplify right side
   757,628x = 2,833,902,896,400
5. Step 5: Solve for x
   x = 2,833,902,896,400/757,628
6. Step 6: Final answer
   x = 3,740,493.88