Finding the Third Proportional to 1,128,389 and 1,649,343

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,389 : 1,649,343 = 1,649,343 : x
2. Step 2: Convert to fraction form
   1,128,389/1,649,343 = 1,649,343/x
3. Step 3: Cross multiply
   1,128,389x = 1,649,343 × 1,649,343
4. Step 4: Simplify right side
   1,128,389x = 2,720,332,331,649
5. Step 5: Solve for x
   x = 2,720,332,331,649/1,128,389
6. Step 6: Final answer
   x = 2,410,810.75