Finding the Third Proportional to 5,992,139 and 8,478,698

Step by Step Solution

1. Step 1: Write the proportion equation
   5,992,139 : 8,478,698 = 8,478,698 : x
2. Step 2: Convert to fraction form
   5,992,139/8,478,698 = 8,478,698/x
3. Step 3: Cross multiply
   5,992,139x = 8,478,698 × 8,478,698
4. Step 4: Simplify right side
   5,992,139x = 71,888,319,775,204
5. Step 5: Solve for x
   x = 71,888,319,775,204/5,992,139
6. Step 6: Final answer
   x = 11,997,104.84