Finding the Third Proportional to 53,178.75 and 79,930.13

Step by Step Solution

1. Step 1: Write the proportion equation
   53,178.75 : 79,930.13 = 79,930.13 : x
2. Step 2: Convert to fraction form
   53,178.75/79,930.13 = 79,930.13/x
3. Step 3: Cross multiply
   53,178.75x = 79,930.13 × 79,930.13
4. Step 4: Simplify right side
   53,178.75x = 6,388,824,882.52
5. Step 5: Solve for x
   x = 6,388,824,882.52/53,178.75
6. Step 6: Final answer
   x = 120,138.68