Finding the Third Proportional to 5,579,328 and 8,621,352

Step by Step Solution

1. Step 1: Write the proportion equation
   5,579,328 : 8,621,352 = 8,621,352 : x
2. Step 2: Convert to fraction form
   5,579,328/8,621,352 = 8,621,352/x
3. Step 3: Cross multiply
   5,579,328x = 8,621,352 × 8,621,352
4. Step 4: Simplify right side
   5,579,328x = 74,327,710,307,904
5. Step 5: Solve for x
   x = 74,327,710,307,904/5,579,328
6. Step 6: Final answer
   x = 13,321,982.56