Finding the Third Proportional to 81,900 and 123,427

Step by Step Solution

1. Step 1: Write the proportion equation
   81,900 : 123,427 = 123,427 : x
2. Step 2: Convert to fraction form
   81,900/123,427 = 123,427/x
3. Step 3: Cross multiply
   81,900x = 123,427 × 123,427
4. Step 4: Simplify right side
   81,900x = 15,234,224,329
5. Step 5: Solve for x
   x = 15,234,224,329/81,900
6. Step 6: Final answer
   x = 186,010.07