Finding the Third Proportional to 60,290.38 and 128,885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,290.38 : 128,885.50 = 128,885.50 : x
2. Step 2: Convert to fraction form
   60,290.38/128,885.50 = 128,885.50/x
3. Step 3: Cross multiply
   60,290.38x = 128,885.50 × 128,885.50
4. Step 4: Simplify right side
   60,290.38x = 16,611,472,110.25
5. Step 5: Solve for x
   x = 16,611,472,110.25/60,290.38
6. Step 6: Final answer
   x = 275,524.44