Finding the Third Proportional to 1,662,178 and 3,639,635

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662,178 : 3,639,635 = 3,639,635 : x
2. Step 2: Convert to fraction form
   1,662,178/3,639,635 = 3,639,635/x
3. Step 3: Cross multiply
   1,662,178x = 3,639,635 × 3,639,635
4. Step 4: Simplify right side
   1,662,178x = 13,246,942,933,225
5. Step 5: Solve for x
   x = 13,246,942,933,225/1,662,178
6. Step 6: Final answer
   x = 7,969,629.57