Finding the Third Proportional to 5,578,296 and 8,619,732

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578,296 : 8,619,732 = 8,619,732 : x
2. Step 2: Convert to fraction form
   5,578,296/8,619,732 = 8,619,732/x
3. Step 3: Cross multiply
   5,578,296x = 8,619,732 × 8,619,732
4. Step 4: Simplify right side
   5,578,296x = 74,299,779,751,824
5. Step 5: Solve for x
   x = 74,299,779,751,824/5,578,296
6. Step 6: Final answer
   x = 13,319,440.16