Finding the Third Proportional to 5,110.88 and 10,415.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,110.88 : 10,415.31 = 10,415.31 : x
2. Step 2: Convert to fraction form
   5,110.88/10,415.31 = 10,415.31/x
3. Step 3: Cross multiply
   5,110.88x = 10,415.31 × 10,415.31
4. Step 4: Simplify right side
   5,110.88x = 108,478,734.47
5. Step 5: Solve for x
   x = 108,478,734.47/5,110.88
6. Step 6: Final answer
   x = 21,225.08