Finding the Third Proportional to 50,172.75 and 77,770.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,172.75 : 77,770.50 = 77,770.50 : x
2. Step 2: Convert to fraction form
   50,172.75/77,770.50 = 77,770.50/x
3. Step 3: Cross multiply
   50,172.75x = 77,770.50 × 77,770.50
4. Step 4: Simplify right side
   50,172.75x = 6,048,250,670.25
5. Step 5: Solve for x
   x = 6,048,250,670.25/50,172.75
6. Step 6: Final answer
   x = 120,548.52