Finding the Third Proportional to 51,018.61 and 79,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   51,018.61 : 79,142.06 = 79,142.06 : x
2. Step 2: Convert to fraction form
   51,018.61/79,142.06 = 79,142.06/x
3. Step 3: Cross multiply
   51,018.61x = 79,142.06 × 79,142.06
4. Step 4: Simplify right side
   51,018.61x = 6,263,466,056.75
5. Step 5: Solve for x
   x = 6,263,466,056.75/51,018.61
6. Step 6: Final answer
   x = 122,768.26