Finding the Third Proportional to 2,171,302 and 4,640,778

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171,302 : 4,640,778 = 4,640,778 : x
2. Step 2: Convert to fraction form
   2,171,302/4,640,778 = 4,640,778/x
3. Step 3: Cross multiply
   2,171,302x = 4,640,778 × 4,640,778
4. Step 4: Simplify right side
   2,171,302x = 21,536,820,445,284
5. Step 5: Solve for x
   x = 21,536,820,445,284/2,171,302
6. Step 6: Final answer
   x = 9,918,850.74