Finding the Third Proportional to 11,986.31 and 26,159.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,986.31 : 26,159.63 = 26,159.63 : x
2. Step 2: Convert to fraction form
   11,986.31/26,159.63 = 26,159.63/x
3. Step 3: Cross multiply
   11,986.31x = 26,159.63 × 26,159.63
4. Step 4: Simplify right side
   11,986.31x = 684,325,980.14
5. Step 5: Solve for x
   x = 684,325,980.14/11,986.31
6. Step 6: Final answer
   x = 57,092.29