Finding the Third Proportional to 51,720.75 and 79,086.38

Step by Step Solution

1. Step 1: Write the proportion equation
   51,720.75 : 79,086.38 = 79,086.38 : x
2. Step 2: Convert to fraction form
   51,720.75/79,086.38 = 79,086.38/x
3. Step 3: Cross multiply
   51,720.75x = 79,086.38 × 79,086.38
4. Step 4: Simplify right side
   51,720.75x = 6,254,654,710.64
5. Step 5: Solve for x
   x = 6,254,654,710.64/51,720.75
6. Step 6: Final answer
   x = 120,931.25