Finding the Third Proportional to 31,286 and 45,615

Step by Step Solution

1. Step 1: Write the proportion equation
   31,286 : 45,615 = 45,615 : x
2. Step 2: Convert to fraction form
   31,286/45,615 = 45,615/x
3. Step 3: Cross multiply
   31,286x = 45,615 × 45,615
4. Step 4: Simplify right side
   31,286x = 2,080,728,225
5. Step 5: Solve for x
   x = 2,080,728,225/31,286
6. Step 6: Final answer
   x = 66,506.69