Finding the Third Proportional to 55,147.50 and 79,611.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,147.50 : 79,611.75 = 79,611.75 : x
2. Step 2: Convert to fraction form
   55,147.50/79,611.75 = 79,611.75/x
3. Step 3: Cross multiply
   55,147.50x = 79,611.75 × 79,611.75
4. Step 4: Simplify right side
   55,147.50x = 6,338,030,738.06
5. Step 5: Solve for x
   x = 6,338,030,738.06/55,147.50
6. Step 6: Final answer
   x = 114,928.70