Finding the Third Proportional to 5,011.50 and 7,790

Step by Step Solution

1. Step 1: Write the proportion equation
   5,011.50 : 7,790 = 7,790 : x
2. Step 2: Convert to fraction form
   5,011.50/7,790 = 7,790/x
3. Step 3: Cross multiply
   5,011.50x = 7,790 × 7,790
4. Step 4: Simplify right side
   5,011.50x = 60,684,100
5. Step 5: Solve for x
   x = 60,684,100/5,011.50
6. Step 6: Final answer
   x = 12,108.97