Finding the Third Proportional to 72,076 and 108,978

Step by Step Solution

1. Step 1: Write the proportion equation
   72,076 : 108,978 = 108,978 : x
2. Step 2: Convert to fraction form
   72,076/108,978 = 108,978/x
3. Step 3: Cross multiply
   72,076x = 108,978 × 108,978
4. Step 4: Simplify right side
   72,076x = 11,876,204,484
5. Step 5: Solve for x
   x = 11,876,204,484/72,076
6. Step 6: Final answer
   x = 164,773.36