Finding the Third Proportional to 20,155 and 34,985

Step by Step Solution

1. Step 1: Write the proportion equation
   20,155 : 34,985 = 34,985 : x
2. Step 2: Convert to fraction form
   20,155/34,985 = 34,985/x
3. Step 3: Cross multiply
   20,155x = 34,985 × 34,985
4. Step 4: Simplify right side
   20,155x = 1,223,950,225
5. Step 5: Solve for x
   x = 1,223,950,225/20,155
6. Step 6: Final answer
   x = 60,726.88