Finding the Third Proportional to 3,955,804 and 8,121,316

Step by Step Solution

1. Step 1: Write the proportion equation
   3,955,804 : 8,121,316 = 8,121,316 : x
2. Step 2: Convert to fraction form
   3,955,804/8,121,316 = 8,121,316/x
3. Step 3: Cross multiply
   3,955,804x = 8,121,316 × 8,121,316
4. Step 4: Simplify right side
   3,955,804x = 65,955,773,571,856
5. Step 5: Solve for x
   x = 65,955,773,571,856/3,955,804
6. Step 6: Final answer
   x = 16,673,165.20