Finding the Third Proportional to 11,487.45 and 15,445.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,487.45 : 15,445.69 = 15,445.69 : x
2. Step 2: Convert to fraction form
   11,487.45/15,445.69 = 15,445.69/x
3. Step 3: Cross multiply
   11,487.45x = 15,445.69 × 15,445.69
4. Step 4: Simplify right side
   11,487.45x = 238,569,262.35
5. Step 5: Solve for x
   x = 238,569,262.35/11,487.45
6. Step 6: Final answer
   x = 20,767.83