Finding the Third Proportional to 31,298 and 42,915

Step by Step Solution

1. Step 1: Write the proportion equation
   31,298 : 42,915 = 42,915 : x
2. Step 2: Convert to fraction form
   31,298/42,915 = 42,915/x
3. Step 3: Cross multiply
   31,298x = 42,915 × 42,915
4. Step 4: Simplify right side
   31,298x = 1,841,697,225
5. Step 5: Solve for x
   x = 1,841,697,225/31,298
6. Step 6: Final answer
   x = 58,843.93