Finding the Third Proportional to 31,179.94 and 42,137.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,179.94 : 42,137.72 = 42,137.72 : x
2. Step 2: Convert to fraction form
   31,179.94/42,137.72 = 42,137.72/x
3. Step 3: Cross multiply
   31,179.94x = 42,137.72 × 42,137.72
4. Step 4: Simplify right side
   31,179.94x = 1,775,587,341.45
5. Step 5: Solve for x
   x = 1,775,587,341.45/31,179.94
6. Step 6: Final answer
   x = 56,946.47