Finding the Third Proportional to 3,556,226 and 7,668,220

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556,226 : 7,668,220 = 7,668,220 : x
2. Step 2: Convert to fraction form
   3,556,226/7,668,220 = 7,668,220/x
3. Step 3: Cross multiply
   3,556,226x = 7,668,220 × 7,668,220
4. Step 4: Simplify right side
   3,556,226x = 58,801,597,968,400
5. Step 5: Solve for x
   x = 58,801,597,968,400/3,556,226
6. Step 6: Final answer
   x = 16,534,831.58