Finding the Third Proportional to 9,124.50 and 13,645.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.50 : 13,645.50 = 13,645.50 : x
2. Step 2: Convert to fraction form
   9,124.50/13,645.50 = 13,645.50/x
3. Step 3: Cross multiply
   9,124.50x = 13,645.50 × 13,645.50
4. Step 4: Simplify right side
   9,124.50x = 186,199,670.25
5. Step 5: Solve for x
   x = 186,199,670.25/9,124.50
6. Step 6: Final answer
   x = 20,406.56