Finding the Third Proportional to 8,706.56 and 13,079.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,706.56 : 13,079.63 = 13,079.63 : x
2. Step 2: Convert to fraction form
   8,706.56/13,079.63 = 13,079.63/x
3. Step 3: Cross multiply
   8,706.56x = 13,079.63 × 13,079.63
4. Step 4: Simplify right side
   8,706.56x = 171,076,590.14
5. Step 5: Solve for x
   x = 171,076,590.14/8,706.56
6. Step 6: Final answer
   x = 19,649.15