Finding the Third Proportional to 1,662,186 and 3,639,658

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662,186 : 3,639,658 = 3,639,658 : x
2. Step 2: Convert to fraction form
   1,662,186/3,639,658 = 3,639,658/x
3. Step 3: Cross multiply
   1,662,186x = 3,639,658 × 3,639,658
4. Step 4: Simplify right side
   1,662,186x = 13,247,110,356,964
5. Step 5: Solve for x
   x = 13,247,110,356,964/1,662,186
6. Step 6: Final answer
   x = 7,969,691.93