Finding the Third Proportional to 56,455.31 and 87,519.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,455.31 : 87,519.38 = 87,519.38 : x
2. Step 2: Convert to fraction form
   56,455.31/87,519.38 = 87,519.38/x
3. Step 3: Cross multiply
   56,455.31x = 87,519.38 × 87,519.38
4. Step 4: Simplify right side
   56,455.31x = 7,659,641,000.39
5. Step 5: Solve for x
   x = 7,659,641,000.39/56,455.31
6. Step 6: Final answer
   x = 135,676.18