Finding the Third Proportional to 89,580 and 136,962

Step by Step Solution

1. Step 1: Write the proportion equation
   89,580 : 136,962 = 136,962 : x
2. Step 2: Convert to fraction form
   89,580/136,962 = 136,962/x
3. Step 3: Cross multiply
   89,580x = 136,962 × 136,962
4. Step 4: Simplify right side
   89,580x = 18,758,589,444
5. Step 5: Solve for x
   x = 18,758,589,444/89,580
6. Step 6: Final answer
   x = 209,406.00