Finding the Third Proportional to 8,648,820 and 12,165,666

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648,820 : 12,165,666 = 12,165,666 : x
2. Step 2: Convert to fraction form
   8,648,820/12,165,666 = 12,165,666/x
3. Step 3: Cross multiply
   8,648,820x = 12,165,666 × 12,165,666
4. Step 4: Simplify right side
   8,648,820x = 148,003,429,223,556
5. Step 5: Solve for x
   x = 148,003,429,223,556/8,648,820
6. Step 6: Final answer
   x = 17,112,557.46