Finding the Third Proportional to 15,415 and 31,558

Step by Step Solution

1. Step 1: Write the proportion equation
   15,415 : 31,558 = 31,558 : x
2. Step 2: Convert to fraction form
   15,415/31,558 = 31,558/x
3. Step 3: Cross multiply
   15,415x = 31,558 × 31,558
4. Step 4: Simplify right side
   15,415x = 995,907,364
5. Step 5: Solve for x
   x = 995,907,364/15,415
6. Step 6: Final answer
   x = 64,606.38