Finding the Third Proportional to 31,451.63 and 42,028.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,451.63 : 42,028.88 = 42,028.88 : x
2. Step 2: Convert to fraction form
   31,451.63/42,028.88 = 42,028.88/x
3. Step 3: Cross multiply
   31,451.63x = 42,028.88 × 42,028.88
4. Step 4: Simplify right side
   31,451.63x = 1,766,426,333.77
5. Step 5: Solve for x
   x = 1,766,426,333.77/31,451.63
6. Step 6: Final answer
   x = 56,163.28