Finding the Third Proportional to 1,358,664 and 2,776,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358,664 : 2,776,320 = 2,776,320 : x
2. Step 2: Convert to fraction form
   1,358,664/2,776,320 = 2,776,320/x
3. Step 3: Cross multiply
   1,358,664x = 2,776,320 × 2,776,320
4. Step 4: Simplify right side
   1,358,664x = 7,707,952,742,400
5. Step 5: Solve for x
   x = 7,707,952,742,400/1,358,664
6. Step 6: Final answer
   x = 5,673,185.38