Finding the Third Proportional to 2,211,144 and 4,645,200

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211,144 : 4,645,200 = 4,645,200 : x
2. Step 2: Convert to fraction form
   2,211,144/4,645,200 = 4,645,200/x
3. Step 3: Cross multiply
   2,211,144x = 4,645,200 × 4,645,200
4. Step 4: Simplify right side
   2,211,144x = 21,577,883,040,000
5. Step 5: Solve for x
   x = 21,577,883,040,000/2,211,144
6. Step 6: Final answer
   x = 9,758,696.42