Finding the Third Proportional to 51,132 and 78,483

Step by Step Solution

1. Step 1: Write the proportion equation
   51,132 : 78,483 = 78,483 : x
2. Step 2: Convert to fraction form
   51,132/78,483 = 78,483/x
3. Step 3: Cross multiply
   51,132x = 78,483 × 78,483
4. Step 4: Simplify right side
   51,132x = 6,159,581,289
5. Step 5: Solve for x
   x = 6,159,581,289/51,132
6. Step 6: Final answer
   x = 120,464.31