Finding the Third Proportional to 2,178,650 and 4,787,356

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,650 : 4,787,356 = 4,787,356 : x
2. Step 2: Convert to fraction form
   2,178,650/4,787,356 = 4,787,356/x
3. Step 3: Cross multiply
   2,178,650x = 4,787,356 × 4,787,356
4. Step 4: Simplify right side
   2,178,650x = 22,918,777,470,736
5. Step 5: Solve for x
   x = 22,918,777,470,736/2,178,650
6. Step 6: Final answer
   x = 10,519,715.18