Finding the Third Proportional to 30,556 and 65,716

Step by Step Solution

1. Step 1: Write the proportion equation
   30,556 : 65,716 = 65,716 : x
2. Step 2: Convert to fraction form
   30,556/65,716 = 65,716/x
3. Step 3: Cross multiply
   30,556x = 65,716 × 65,716
4. Step 4: Simplify right side
   30,556x = 4,318,592,656
5. Step 5: Solve for x
   x = 4,318,592,656/30,556
6. Step 6: Final answer
   x = 141,333.70