Finding the Third Proportional to 56,978 and 124,972

Step by Step Solution

1. Step 1: Write the proportion equation
   56,978 : 124,972 = 124,972 : x
2. Step 2: Convert to fraction form
   56,978/124,972 = 124,972/x
3. Step 3: Cross multiply
   56,978x = 124,972 × 124,972
4. Step 4: Simplify right side
   56,978x = 15,618,000,784
5. Step 5: Solve for x
   x = 15,618,000,784/56,978
6. Step 6: Final answer
   x = 274,105.81