Finding the Third Proportional to 653,878 and 1,378,746

Step by Step Solution

1. Step 1: Write the proportion equation
   653,878 : 1,378,746 = 1,378,746 : x
2. Step 2: Convert to fraction form
   653,878/1,378,746 = 1,378,746/x
3. Step 3: Cross multiply
   653,878x = 1,378,746 × 1,378,746
4. Step 4: Simplify right side
   653,878x = 1,900,940,532,516
5. Step 5: Solve for x
   x = 1,900,940,532,516/653,878
6. Step 6: Final answer
   x = 2,907,179.22