Finding the Third Proportional to 31,290.05 and 35,390.67

Step by Step Solution

1. Step 1: Write the proportion equation
   31,290.05 : 35,390.67 = 35,390.67 : x
2. Step 2: Convert to fraction form
   31,290.05/35,390.67 = 35,390.67/x
3. Step 3: Cross multiply
   31,290.05x = 35,390.67 × 35,390.67
4. Step 4: Simplify right side
   31,290.05x = 1,252,499,655.76
5. Step 5: Solve for x
   x = 1,252,499,655.76/31,290.05
6. Step 6: Final answer
   x = 40,028.69