Finding the Third Proportional to 7,718.63 and 10,631.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,718.63 : 10,631.25 = 10,631.25 : x
2. Step 2: Convert to fraction form
   7,718.63/10,631.25 = 10,631.25/x
3. Step 3: Cross multiply
   7,718.63x = 10,631.25 × 10,631.25
4. Step 4: Simplify right side
   7,718.63x = 113,023,476.56
5. Step 5: Solve for x
   x = 113,023,476.56/7,718.63
6. Step 6: Final answer
   x = 14,642.95