Finding the Third Proportional to 1,578,316 and 3,531,416

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,316 : 3,531,416 = 3,531,416 : x
2. Step 2: Convert to fraction form
   1,578,316/3,531,416 = 3,531,416/x
3. Step 3: Cross multiply
   1,578,316x = 3,531,416 × 3,531,416
4. Step 4: Simplify right side
   1,578,316x = 12,470,898,965,056
5. Step 5: Solve for x
   x = 12,470,898,965,056/1,578,316
6. Step 6: Final answer
   x = 7,901,395.52