Finding the Third Proportional to 1,687,008 and 3,639,744

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687,008 : 3,639,744 = 3,639,744 : x
2. Step 2: Convert to fraction form
   1,687,008/3,639,744 = 3,639,744/x
3. Step 3: Cross multiply
   1,687,008x = 3,639,744 × 3,639,744
4. Step 4: Simplify right side
   1,687,008x = 13,247,736,385,536
5. Step 5: Solve for x
   x = 13,247,736,385,536/1,687,008
6. Step 6: Final answer
   x = 7,852,799.98