Finding the Third Proportional to 5,477,988 and 8,515,998

Step by Step Solution

1. Step 1: Write the proportion equation
   5,477,988 : 8,515,998 = 8,515,998 : x
2. Step 2: Convert to fraction form
   5,477,988/8,515,998 = 8,515,998/x
3. Step 3: Cross multiply
   5,477,988x = 8,515,998 × 8,515,998
4. Step 4: Simplify right side
   5,477,988x = 72,522,221,936,004
5. Step 5: Solve for x
   x = 72,522,221,936,004/5,477,988
6. Step 6: Final answer
   x = 13,238,842.79