Finding the Third Proportional to 1,433,138 and 3,128,260

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,138 : 3,128,260 = 3,128,260 : x
2. Step 2: Convert to fraction form
   1,433,138/3,128,260 = 3,128,260/x
3. Step 3: Cross multiply
   1,433,138x = 3,128,260 × 3,128,260
4. Step 4: Simplify right side
   1,433,138x = 9,786,010,627,600
5. Step 5: Solve for x
   x = 9,786,010,627,600/1,433,138
6. Step 6: Final answer
   x = 6,828,379.84