Finding the Third Proportional to 9,288.50 and 21,905

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.50 : 21,905 = 21,905 : x
2. Step 2: Convert to fraction form
   9,288.50/21,905 = 21,905/x
3. Step 3: Cross multiply
   9,288.50x = 21,905 × 21,905
4. Step 4: Simplify right side
   9,288.50x = 479,829,025
5. Step 5: Solve for x
   x = 479,829,025/9,288.50
6. Step 6: Final answer
   x = 51,658.40