Finding the Third Proportional to 12,990.38 and 28,056.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,990.38 : 28,056.38 = 28,056.38 : x
2. Step 2: Convert to fraction form
   12,990.38/28,056.38 = 28,056.38/x
3. Step 3: Cross multiply
   12,990.38x = 28,056.38 × 28,056.38
4. Step 4: Simplify right side
   12,990.38x = 787,160,178.14
5. Step 5: Solve for x
   x = 787,160,178.14/12,990.38
6. Step 6: Final answer
   x = 60,595.65