Finding the Third Proportional to 39,422 and 58,978

Step by Step Solution

1. Step 1: Write the proportion equation
   39,422 : 58,978 = 58,978 : x
2. Step 2: Convert to fraction form
   39,422/58,978 = 58,978/x
3. Step 3: Cross multiply
   39,422x = 58,978 × 58,978
4. Step 4: Simplify right side
   39,422x = 3,478,404,484
5. Step 5: Solve for x
   x = 3,478,404,484/39,422
6. Step 6: Final answer
   x = 88,235.11