Finding the Third Proportional to 9,173,591.72 and 12,858,390.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173,591.72 : 12,858,390.56 = 12,858,390.56 : x
2. Step 2: Convert to fraction form
   9,173,591.72/12,858,390.56 = 12,858,390.56/x
3. Step 3: Cross multiply
   9,173,591.72x = 12,858,390.56 × 12,858,390.56
4. Step 4: Simplify right side
   9,173,591.72x = 165,338,207,857,789.06
5. Step 5: Solve for x
   x = 165,338,207,857,789.06/9,173,591.72
6. Step 6: Final answer
   x = 18,023,279.53