Finding the Third Proportional to 5,320.69 and 11,681.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,320.69 : 11,681.72 = 11,681.72 : x
2. Step 2: Convert to fraction form
   5,320.69/11,681.72 = 11,681.72/x
3. Step 3: Cross multiply
   5,320.69x = 11,681.72 × 11,681.72
4. Step 4: Simplify right side
   5,320.69x = 136,462,552.95
5. Step 5: Solve for x
   x = 136,462,552.95/5,320.69
6. Step 6: Final answer
   x = 25,647.54