Finding the Third Proportional to 7,664.63 and 12,276.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,664.63 : 12,276.56 = 12,276.56 : x
2. Step 2: Convert to fraction form
   7,664.63/12,276.56 = 12,276.56/x
3. Step 3: Cross multiply
   7,664.63x = 12,276.56 × 12,276.56
4. Step 4: Simplify right side
   7,664.63x = 150,713,986.82
5. Step 5: Solve for x
   x = 150,713,986.82/7,664.63
6. Step 6: Final answer
   x = 19,663.58