Finding the Third Proportional to 11,811 and 30,672.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,811 : 30,672.75 = 30,672.75 : x
2. Step 2: Convert to fraction form
   11,811/30,672.75 = 30,672.75/x
3. Step 3: Cross multiply
   11,811x = 30,672.75 × 30,672.75
4. Step 4: Simplify right side
   11,811x = 940,817,592.56
5. Step 5: Solve for x
   x = 940,817,592.56/11,811
6. Step 6: Final answer
   x = 79,656.05