Finding the Third Proportional to 6,156 and 12,749.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,156 : 12,749.91 = 12,749.91 : x
2. Step 2: Convert to fraction form
   6,156/12,749.91 = 12,749.91/x
3. Step 3: Cross multiply
   6,156x = 12,749.91 × 12,749.91
4. Step 4: Simplify right side
   6,156x = 162,560,109.38
5. Step 5: Solve for x
   x = 162,560,109.38/6,156
6. Step 6: Final answer
   x = 26,406.78