Finding the Third Proportional to 2,178,648 and 4,787,352

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,648 : 4,787,352 = 4,787,352 : x
2. Step 2: Convert to fraction form
   2,178,648/4,787,352 = 4,787,352/x
3. Step 3: Cross multiply
   2,178,648x = 4,787,352 × 4,787,352
4. Step 4: Simplify right side
   2,178,648x = 22,918,739,171,904
5. Step 5: Solve for x
   x = 22,918,739,171,904/2,178,648
6. Step 6: Final answer
   x = 10,519,707.26