Finding the Third Proportional to 1,800,319 and 3,909,726

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,319 : 3,909,726 = 3,909,726 : x
2. Step 2: Convert to fraction form
   1,800,319/3,909,726 = 3,909,726/x
3. Step 3: Cross multiply
   1,800,319x = 3,909,726 × 3,909,726
4. Step 4: Simplify right side
   1,800,319x = 15,285,957,395,076
5. Step 5: Solve for x
   x = 15,285,957,395,076/1,800,319
6. Step 6: Final answer
   x = 8,490,693.81