Finding the Third Proportional to 747,731 and 1,621,660

Step by Step Solution

1. Step 1: Write the proportion equation
   747,731 : 1,621,660 = 1,621,660 : x
2. Step 2: Convert to fraction form
   747,731/1,621,660 = 1,621,660/x
3. Step 3: Cross multiply
   747,731x = 1,621,660 × 1,621,660
4. Step 4: Simplify right side
   747,731x = 2,629,781,155,600
5. Step 5: Solve for x
   x = 2,629,781,155,600/747,731
6. Step 6: Final answer
   x = 3,517,015.02