Finding the Third Proportional to 42,978 and 60,522

Step by Step Solution

1. Step 1: Write the proportion equation
   42,978 : 60,522 = 60,522 : x
2. Step 2: Convert to fraction form
   42,978/60,522 = 60,522/x
3. Step 3: Cross multiply
   42,978x = 60,522 × 60,522
4. Step 4: Simplify right side
   42,978x = 3,662,912,484
5. Step 5: Solve for x
   x = 3,662,912,484/42,978
6. Step 6: Final answer
   x = 85,227.62