Finding the Third Proportional to 641,403 and 1,384,501

Step by Step Solution

1. Step 1: Write the proportion equation
   641,403 : 1,384,501 = 1,384,501 : x
2. Step 2: Convert to fraction form
   641,403/1,384,501 = 1,384,501/x
3. Step 3: Cross multiply
   641,403x = 1,384,501 × 1,384,501
4. Step 4: Simplify right side
   641,403x = 1,916,843,019,001
5. Step 5: Solve for x
   x = 1,916,843,019,001/641,403
6. Step 6: Final answer
   x = 2,988,515.83