Finding the Third Proportional to 3,691,621 and 5,588,435

Step by Step Solution

1. Step 1: Write the proportion equation
   3,691,621 : 5,588,435 = 5,588,435 : x
2. Step 2: Convert to fraction form
   3,691,621/5,588,435 = 5,588,435/x
3. Step 3: Cross multiply
   3,691,621x = 5,588,435 × 5,588,435
4. Step 4: Simplify right side
   3,691,621x = 31,230,605,749,225
5. Step 5: Solve for x
   x = 31,230,605,749,225/3,691,621
6. Step 6: Final answer
   x = 8,459,862.42