Finding the Third Proportional to 63,785 and 139,666

Step by Step Solution

1. Step 1: Write the proportion equation
   63,785 : 139,666 = 139,666 : x
2. Step 2: Convert to fraction form
   63,785/139,666 = 139,666/x
3. Step 3: Cross multiply
   63,785x = 139,666 × 139,666
4. Step 4: Simplify right side
   63,785x = 19,506,591,556
5. Step 5: Solve for x
   x = 19,506,591,556/63,785
6. Step 6: Final answer
   x = 305,817.85