Finding the Third Proportional to 10,539 and 21,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,539 : 21,442.50 = 21,442.50 : x
2. Step 2: Convert to fraction form
   10,539/21,442.50 = 21,442.50/x
3. Step 3: Cross multiply
   10,539x = 21,442.50 × 21,442.50
4. Step 4: Simplify right side
   10,539x = 459,780,806.25
5. Step 5: Solve for x
   x = 459,780,806.25/10,539
6. Step 6: Final answer
   x = 43,626.61