Finding the Third Proportional to 31,300 and 65,188

Step by Step Solution

1. Step 1: Write the proportion equation
   31,300 : 65,188 = 65,188 : x
2. Step 2: Convert to fraction form
   31,300/65,188 = 65,188/x
3. Step 3: Cross multiply
   31,300x = 65,188 × 65,188
4. Step 4: Simplify right side
   31,300x = 4,249,475,344
5. Step 5: Solve for x
   x = 4,249,475,344/31,300
6. Step 6: Final answer
   x = 135,765.99