Finding the Third Proportional to 2,139,646 and 4,616,344

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,646 : 4,616,344 = 4,616,344 : x
2. Step 2: Convert to fraction form
   2,139,646/4,616,344 = 4,616,344/x
3. Step 3: Cross multiply
   2,139,646x = 4,616,344 × 4,616,344
4. Step 4: Simplify right side
   2,139,646x = 21,310,631,926,336
5. Step 5: Solve for x
   x = 21,310,631,926,336/2,139,646
6. Step 6: Final answer
   x = 9,959,886.79