Finding the Third Proportional to 5,402,268 and 8,240,580

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402,268 : 8,240,580 = 8,240,580 : x
2. Step 2: Convert to fraction form
   5,402,268/8,240,580 = 8,240,580/x
3. Step 3: Cross multiply
   5,402,268x = 8,240,580 × 8,240,580
4. Step 4: Simplify right side
   5,402,268x = 67,907,158,736,400
5. Step 5: Solve for x
   x = 67,907,158,736,400/5,402,268
6. Step 6: Final answer
   x = 12,570,120.32