Finding the Third Proportional to 1,371,203 and 2,978,278

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371,203 : 2,978,278 = 2,978,278 : x
2. Step 2: Convert to fraction form
   1,371,203/2,978,278 = 2,978,278/x
3. Step 3: Cross multiply
   1,371,203x = 2,978,278 × 2,978,278
4. Step 4: Simplify right side
   1,371,203x = 8,870,139,845,284
5. Step 5: Solve for x
   x = 8,870,139,845,284/1,371,203
6. Step 6: Final answer
   x = 6,468,874.30