Finding the Third Proportional to 1,377,471 and 3,216,621

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,471 : 3,216,621 = 3,216,621 : x
2. Step 2: Convert to fraction form
   1,377,471/3,216,621 = 3,216,621/x
3. Step 3: Cross multiply
   1,377,471x = 3,216,621 × 3,216,621
4. Step 4: Simplify right side
   1,377,471x = 10,346,650,657,641
5. Step 5: Solve for x
   x = 10,346,650,657,641/1,377,471
6. Step 6: Final answer
   x = 7,511,338.28