Finding the Third Proportional to 5,085.74 and 7,775.17

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.74 : 7,775.17 = 7,775.17 : x
2. Step 2: Convert to fraction form
   5,085.74/7,775.17 = 7,775.17/x
3. Step 3: Cross multiply
   5,085.74x = 7,775.17 × 7,775.17
4. Step 4: Simplify right side
   5,085.74x = 60,453,259.72
5. Step 5: Solve for x
   x = 60,453,259.72/5,085.74
6. Step 6: Final answer
   x = 11,886.83