Finding the Third Proportional to 8,556,216 and 12,835,980

Step by Step Solution

1. Step 1: Write the proportion equation
   8,556,216 : 12,835,980 = 12,835,980 : x
2. Step 2: Convert to fraction form
   8,556,216/12,835,980 = 12,835,980/x
3. Step 3: Cross multiply
   8,556,216x = 12,835,980 × 12,835,980
4. Step 4: Simplify right side
   8,556,216x = 164,762,382,560,400
5. Step 5: Solve for x
   x = 164,762,382,560,400/8,556,216
6. Step 6: Final answer
   x = 19,256,454.32