Finding the Third Proportional to 1,662,176 and 3,639,631

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662,176 : 3,639,631 = 3,639,631 : x
2. Step 2: Convert to fraction form
   1,662,176/3,639,631 = 3,639,631/x
3. Step 3: Cross multiply
   1,662,176x = 3,639,631 × 3,639,631
4. Step 4: Simplify right side
   1,662,176x = 13,246,913,816,161
5. Step 5: Solve for x
   x = 13,246,913,816,161/1,662,176
6. Step 6: Final answer
   x = 7,969,621.64