Finding the Third Proportional to 1,378,776 and 2,978,916

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,776 : 2,978,916 = 2,978,916 : x
2. Step 2: Convert to fraction form
   1,378,776/2,978,916 = 2,978,916/x
3. Step 3: Cross multiply
   1,378,776x = 2,978,916 × 2,978,916
4. Step 4: Simplify right side
   1,378,776x = 8,873,940,535,056
5. Step 5: Solve for x
   x = 8,873,940,535,056/1,378,776
6. Step 6: Final answer
   x = 6,436,100.23