Finding the Third Proportional to 11,779.31 and 25,639.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,779.31 : 25,639.31 = 25,639.31 : x
2. Step 2: Convert to fraction form
   11,779.31/25,639.31 = 25,639.31/x
3. Step 3: Cross multiply
   11,779.31x = 25,639.31 × 25,639.31
4. Step 4: Simplify right side
   11,779.31x = 657,374,345.47
5. Step 5: Solve for x
   x = 657,374,345.47/11,779.31
6. Step 6: Final answer
   x = 55,807.53