Finding the Third Proportional to 31,430.25 and 65,958.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,430.25 : 65,958.75 = 65,958.75 : x
2. Step 2: Convert to fraction form
   31,430.25/65,958.75 = 65,958.75/x
3. Step 3: Cross multiply
   31,430.25x = 65,958.75 × 65,958.75
4. Step 4: Simplify right side
   31,430.25x = 4,350,556,701.56
5. Step 5: Solve for x
   x = 4,350,556,701.56/31,430.25
6. Step 6: Final answer
   x = 138,419.41