Finding the Third Proportional to 31,260 and 65,787

Step by Step Solution

1. Step 1: Write the proportion equation
   31,260 : 65,787 = 65,787 : x
2. Step 2: Convert to fraction form
   31,260/65,787 = 65,787/x
3. Step 3: Cross multiply
   31,260x = 65,787 × 65,787
4. Step 4: Simplify right side
   31,260x = 4,327,929,369
5. Step 5: Solve for x
   x = 4,327,929,369/31,260
6. Step 6: Final answer
   x = 138,449.44