Finding the Third Proportional to 4,308 and 9,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,308 : 9,436.50 = 9,436.50 : x
2. Step 2: Convert to fraction form
   4,308/9,436.50 = 9,436.50/x
3. Step 3: Cross multiply
   4,308x = 9,436.50 × 9,436.50
4. Step 4: Simplify right side
   4,308x = 89,047,532.25
5. Step 5: Solve for x
   x = 89,047,532.25/4,308
6. Step 6: Final answer
   x = 20,670.27