Finding the Third Proportional to 1,836,290 and 3,938,212

Step by Step Solution

1. Step 1: Write the proportion equation
   1,836,290 : 3,938,212 = 3,938,212 : x
2. Step 2: Convert to fraction form
   1,836,290/3,938,212 = 3,938,212/x
3. Step 3: Cross multiply
   1,836,290x = 3,938,212 × 3,938,212
4. Step 4: Simplify right side
   1,836,290x = 15,509,513,756,944
5. Step 5: Solve for x
   x = 15,509,513,756,944/1,836,290
6. Step 6: Final answer
   x = 8,446,113.50