Finding the Third Proportional to 50,712 and 79,140

Step by Step Solution

1. Step 1: Write the proportion equation
   50,712 : 79,140 = 79,140 : x
2. Step 2: Convert to fraction form
   50,712/79,140 = 79,140/x
3. Step 3: Cross multiply
   50,712x = 79,140 × 79,140
4. Step 4: Simplify right side
   50,712x = 6,263,139,600
5. Step 5: Solve for x
   x = 6,263,139,600/50,712
6. Step 6: Final answer
   x = 123,504.09