Finding the Third Proportional to 747,648 and 1,621,494

Step by Step Solution

1. Step 1: Write the proportion equation
   747,648 : 1,621,494 = 1,621,494 : x
2. Step 2: Convert to fraction form
   747,648/1,621,494 = 1,621,494/x
3. Step 3: Cross multiply
   747,648x = 1,621,494 × 1,621,494
4. Step 4: Simplify right side
   747,648x = 2,629,242,792,036
5. Step 5: Solve for x
   x = 2,629,242,792,036/747,648
6. Step 6: Final answer
   x = 3,516,685.38