Finding the Third Proportional to 57,620 and 87,238

Step by Step Solution

1. Step 1: Write the proportion equation
   57,620 : 87,238 = 87,238 : x
2. Step 2: Convert to fraction form
   57,620/87,238 = 87,238/x
3. Step 3: Cross multiply
   57,620x = 87,238 × 87,238
4. Step 4: Simplify right side
   57,620x = 7,610,468,644
5. Step 5: Solve for x
   x = 7,610,468,644/57,620
6. Step 6: Final answer
   x = 132,080.33