Finding the Third Proportional to 3,621,808.69 and 7,872,607.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,621,808.69 : 7,872,607.69 = 7,872,607.69 : x
2. Step 2: Convert to fraction form
   3,621,808.69/7,872,607.69 = 7,872,607.69/x
3. Step 3: Cross multiply
   3,621,808.69x = 7,872,607.69 × 7,872,607.69
4. Step 4: Simplify right side
   3,621,808.69x = 61,977,951,801,284.09
5. Step 5: Solve for x
   x = 61,977,951,801,284.09/3,621,808.69
6. Step 6: Final answer
   x = 17,112,431.15