Finding the Third Proportional to 57,103 and 87,003

Step by Step Solution

1. Step 1: Write the proportion equation
   57,103 : 87,003 = 87,003 : x
2. Step 2: Convert to fraction form
   57,103/87,003 = 87,003/x
3. Step 3: Cross multiply
   57,103x = 87,003 × 87,003
4. Step 4: Simplify right side
   57,103x = 7,569,522,009
5. Step 5: Solve for x
   x = 7,569,522,009/57,103
6. Step 6: Final answer
   x = 132,559.10