Finding the Third Proportional to 1,278,992 and 1,921,784

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,992 : 1,921,784 = 1,921,784 : x
2. Step 2: Convert to fraction form
   1,278,992/1,921,784 = 1,921,784/x
3. Step 3: Cross multiply
   1,278,992x = 1,921,784 × 1,921,784
4. Step 4: Simplify right side
   1,278,992x = 3,693,253,742,656
5. Step 5: Solve for x
   x = 3,693,253,742,656/1,278,992
6. Step 6: Final answer
   x = 2,887,628.49