Finding the Third Proportional to 619,413 and 978,977

Step by Step Solution

1. Step 1: Write the proportion equation
   619,413 : 978,977 = 978,977 : x
2. Step 2: Convert to fraction form
   619,413/978,977 = 978,977/x
3. Step 3: Cross multiply
   619,413x = 978,977 × 978,977
4. Step 4: Simplify right side
   619,413x = 958,395,966,529
5. Step 5: Solve for x
   x = 958,395,966,529/619,413
6. Step 6: Final answer
   x = 1,547,264.86