Finding the Third Proportional to 1,010,720 and 2,178,904

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010,720 : 2,178,904 = 2,178,904 : x
2. Step 2: Convert to fraction form
   1,010,720/2,178,904 = 2,178,904/x
3. Step 3: Cross multiply
   1,010,720x = 2,178,904 × 2,178,904
4. Step 4: Simplify right side
   1,010,720x = 4,747,622,641,216
5. Step 5: Solve for x
   x = 4,747,622,641,216/1,010,720
6. Step 6: Final answer
   x = 4,697,267.93