Finding the Third Proportional to 2,245,890 and 4,870,140

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245,890 : 4,870,140 = 4,870,140 : x
2. Step 2: Convert to fraction form
   2,245,890/4,870,140 = 4,870,140/x
3. Step 3: Cross multiply
   2,245,890x = 4,870,140 × 4,870,140
4. Step 4: Simplify right side
   2,245,890x = 23,718,263,619,600
5. Step 5: Solve for x
   x = 23,718,263,619,600/2,245,890
6. Step 6: Final answer
   x = 10,560,741.45