Finding the Third Proportional to 5,236.84 and 7,891.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,236.84 : 7,891.57 = 7,891.57 : x
2. Step 2: Convert to fraction form
   5,236.84/7,891.57 = 7,891.57/x
3. Step 3: Cross multiply
   5,236.84x = 7,891.57 × 7,891.57
4. Step 4: Simplify right side
   5,236.84x = 62,276,835.76
5. Step 5: Solve for x
   x = 62,276,835.76/5,236.84
6. Step 6: Final answer
   x = 11,892.06