Finding the Third Proportional to 4,320.25 and 9,477.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,320.25 : 9,477.50 = 9,477.50 : x
2. Step 2: Convert to fraction form
   4,320.25/9,477.50 = 9,477.50/x
3. Step 3: Cross multiply
   4,320.25x = 9,477.50 × 9,477.50
4. Step 4: Simplify right side
   4,320.25x = 89,823,006.25
5. Step 5: Solve for x
   x = 89,823,006.25/4,320.25
6. Step 6: Final answer
   x = 20,791.16