Finding the Third Proportional to 819,738 and 1,680,300

Step by Step Solution

1. Step 1: Write the proportion equation
   819,738 : 1,680,300 = 1,680,300 : x
2. Step 2: Convert to fraction form
   819,738/1,680,300 = 1,680,300/x
3. Step 3: Cross multiply
   819,738x = 1,680,300 × 1,680,300
4. Step 4: Simplify right side
   819,738x = 2,823,408,090,000
5. Step 5: Solve for x
   x = 2,823,408,090,000/819,738
6. Step 6: Final answer
   x = 3,444,281.09