Finding the Third Proportional to 9,121,870.69 and 12,286,540.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,121,870.69 : 12,286,540.69 = 12,286,540.69 : x
2. Step 2: Convert to fraction form
   9,121,870.69/12,286,540.69 = 12,286,540.69/x
3. Step 3: Cross multiply
   9,121,870.69x = 12,286,540.69 × 12,286,540.69
4. Step 4: Simplify right side
   9,121,870.69x = 150,959,082,065,592.97
5. Step 5: Solve for x
   x = 150,959,082,065,592.97/9,121,870.69
6. Step 6: Final answer
   x = 16,549,136.38