Finding the Third Proportional to 840,780 and 1,302,480

Step by Step Solution

1. Step 1: Write the proportion equation
   840,780 : 1,302,480 = 1,302,480 : x
2. Step 2: Convert to fraction form
   840,780/1,302,480 = 1,302,480/x
3. Step 3: Cross multiply
   840,780x = 1,302,480 × 1,302,480
4. Step 4: Simplify right side
   840,780x = 1,696,454,150,400
5. Step 5: Solve for x
   x = 1,696,454,150,400/840,780
6. Step 6: Final answer
   x = 2,017,714.68