Finding the Third Proportional to 2,178,684 and 4,787,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,684 : 4,787,329.50 = 4,787,329.50 : x
2. Step 2: Convert to fraction form
   2,178,684/4,787,329.50 = 4,787,329.50/x
3. Step 3: Cross multiply
   2,178,684x = 4,787,329.50 × 4,787,329.50
4. Step 4: Simplify right side
   2,178,684x = 22,918,523,741,570.25
5. Step 5: Solve for x
   x = 22,918,523,741,570.25/2,178,684
6. Step 6: Final answer
   x = 10,519,434.55