Finding the Third Proportional to 747,728 and 1,621,654

Step by Step Solution

1. Step 1: Write the proportion equation
   747,728 : 1,621,654 = 1,621,654 : x
2. Step 2: Convert to fraction form
   747,728/1,621,654 = 1,621,654/x
3. Step 3: Cross multiply
   747,728x = 1,621,654 × 1,621,654
4. Step 4: Simplify right side
   747,728x = 2,629,761,695,716
5. Step 5: Solve for x
   x = 2,629,761,695,716/747,728
6. Step 6: Final answer
   x = 3,517,003.10