Finding the Third Proportional to 2,159,172 and 4,617,306

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,172 : 4,617,306 = 4,617,306 : x
2. Step 2: Convert to fraction form
   2,159,172/4,617,306 = 4,617,306/x
3. Step 3: Cross multiply
   2,159,172x = 4,617,306 × 4,617,306
4. Step 4: Simplify right side
   2,159,172x = 21,319,514,697,636
5. Step 5: Solve for x
   x = 21,319,514,697,636/2,159,172
6. Step 6: Final answer
   x = 9,873,930.70