Finding the Third Proportional to 1,378,620 and 1,985,634

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,620 : 1,985,634 = 1,985,634 : x
2. Step 2: Convert to fraction form
   1,378,620/1,985,634 = 1,985,634/x
3. Step 3: Cross multiply
   1,378,620x = 1,985,634 × 1,985,634
4. Step 4: Simplify right side
   1,378,620x = 3,942,742,381,956
5. Step 5: Solve for x
   x = 3,942,742,381,956/1,378,620
6. Step 6: Final answer
   x = 2,859,919.62