Finding the Third Proportional to 1,578,310 and 3,531,404

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,310 : 3,531,404 = 3,531,404 : x
2. Step 2: Convert to fraction form
   1,578,310/3,531,404 = 3,531,404/x
3. Step 3: Cross multiply
   1,578,310x = 3,531,404 × 3,531,404
4. Step 4: Simplify right side
   1,578,310x = 12,470,814,211,216
5. Step 5: Solve for x
   x = 12,470,814,211,216/1,578,310
6. Step 6: Final answer
   x = 7,901,371.85