Finding the Third Proportional to 5,542.17 and 12,315.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,542.17 : 12,315.80 = 12,315.80 : x
2. Step 2: Convert to fraction form
   5,542.17/12,315.80 = 12,315.80/x
3. Step 3: Cross multiply
   5,542.17x = 12,315.80 × 12,315.80
4. Step 4: Simplify right side
   5,542.17x = 151,678,852.67
5. Step 5: Solve for x
   x = 151,678,852.67/5,542.17
6. Step 6: Final answer
   x = 27,368.13