Finding the Third Proportional to 5,091.75 and 9,929.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,091.75 : 9,929.25 = 9,929.25 : x
2. Step 2: Convert to fraction form
   5,091.75/9,929.25 = 9,929.25/x
3. Step 3: Cross multiply
   5,091.75x = 9,929.25 × 9,929.25
4. Step 4: Simplify right side
   5,091.75x = 98,590,005.56
5. Step 5: Solve for x
   x = 98,590,005.56/5,091.75
6. Step 6: Final answer
   x = 19,362.70