Finding the Third Proportional to 5,539,810 and 8,509,826

Step by Step Solution

1. Step 1: Write the proportion equation
   5,539,810 : 8,509,826 = 8,509,826 : x
2. Step 2: Convert to fraction form
   5,539,810/8,509,826 = 8,509,826/x
3. Step 3: Cross multiply
   5,539,810x = 8,509,826 × 8,509,826
4. Step 4: Simplify right side
   5,539,810x = 72,417,138,550,276
5. Step 5: Solve for x
   x = 72,417,138,550,276/5,539,810
6. Step 6: Final answer
   x = 13,072,133.98