Finding the Third Proportional to 8,129,322 and 12,262,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,129,322 : 12,262,873.50 = 12,262,873.50 : x
2. Step 2: Convert to fraction form
   8,129,322/12,262,873.50 = 12,262,873.50/x
3. Step 3: Cross multiply
   8,129,322x = 12,262,873.50 × 12,262,873.50
4. Step 4: Simplify right side
   8,129,322x = 150,378,066,477,002.25
5. Step 5: Solve for x
   x = 150,378,066,477,002.25/8,129,322
6. Step 6: Final answer
   x = 18,498,229.80