Finding the Third Proportional to 1,427,364 and 3,138,623

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,364 : 3,138,623 = 3,138,623 : x
2. Step 2: Convert to fraction form
   1,427,364/3,138,623 = 3,138,623/x
3. Step 3: Cross multiply
   1,427,364x = 3,138,623 × 3,138,623
4. Step 4: Simplify right side
   1,427,364x = 9,850,954,336,129
5. Step 5: Solve for x
   x = 9,850,954,336,129/1,427,364
6. Step 6: Final answer
   x = 6,901,501.18