Finding the Third Proportional to 1,689,360 and 3,642,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,360 : 3,642,780 = 3,642,780 : x
2. Step 2: Convert to fraction form
   1,689,360/3,642,780 = 3,642,780/x
3. Step 3: Cross multiply
   1,689,360x = 3,642,780 × 3,642,780
4. Step 4: Simplify right side
   1,689,360x = 13,269,846,128,400
5. Step 5: Solve for x
   x = 13,269,846,128,400/1,689,360
6. Step 6: Final answer
   x = 7,854,954.62