Finding the Third Proportional to 5,499,287 and 8,319,697

Step by Step Solution

1. Step 1: Write the proportion equation
   5,499,287 : 8,319,697 = 8,319,697 : x
2. Step 2: Convert to fraction form
   5,499,287/8,319,697 = 8,319,697/x
3. Step 3: Cross multiply
   5,499,287x = 8,319,697 × 8,319,697
4. Step 4: Simplify right side
   5,499,287x = 69,217,358,171,809
5. Step 5: Solve for x
   x = 69,217,358,171,809/5,499,287
6. Step 6: Final answer
   x = 12,586,605.89