Finding the Third Proportional to 28,005.75 and 60,172.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,005.75 : 60,172.88 = 60,172.88 : x
2. Step 2: Convert to fraction form
   28,005.75/60,172.88 = 60,172.88/x
3. Step 3: Cross multiply
   28,005.75x = 60,172.88 × 60,172.88
4. Step 4: Simplify right side
   28,005.75x = 3,620,774,885.77
5. Step 5: Solve for x
   x = 3,620,774,885.77/28,005.75
6. Step 6: Final answer
   x = 129,286.84