Finding the Third Proportional to 31,238 and 45,685

Step by Step Solution

1. Step 1: Write the proportion equation
   31,238 : 45,685 = 45,685 : x
2. Step 2: Convert to fraction form
   31,238/45,685 = 45,685/x
3. Step 3: Cross multiply
   31,238x = 45,685 × 45,685
4. Step 4: Simplify right side
   31,238x = 2,087,119,225
5. Step 5: Solve for x
   x = 2,087,119,225/31,238
6. Step 6: Final answer
   x = 66,813.47