Finding the Third Proportional to 757,718 and 1,620,503

Step by Step Solution

1. Step 1: Write the proportion equation
   757,718 : 1,620,503 = 1,620,503 : x
2. Step 2: Convert to fraction form
   757,718/1,620,503 = 1,620,503/x
3. Step 3: Cross multiply
   757,718x = 1,620,503 × 1,620,503
4. Step 4: Simplify right side
   757,718x = 2,626,029,973,009
5. Step 5: Solve for x
   x = 2,626,029,973,009/757,718
6. Step 6: Final answer
   x = 3,465,708.84