Finding the Third Proportional to 11,228.63 and 21,864.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,228.63 : 21,864.94 = 21,864.94 : x
2. Step 2: Convert to fraction form
   11,228.63/21,864.94 = 21,864.94/x
3. Step 3: Cross multiply
   11,228.63x = 21,864.94 × 21,864.94
4. Step 4: Simplify right side
   11,228.63x = 478,075,491.88
5. Step 5: Solve for x
   x = 478,075,491.88/11,228.63
6. Step 6: Final answer
   x = 42,576.49