Finding the Third Proportional to 15,411 and 31,550

Step by Step Solution

1. Step 1: Write the proportion equation
   15,411 : 31,550 = 31,550 : x
2. Step 2: Convert to fraction form
   15,411/31,550 = 31,550/x
3. Step 3: Cross multiply
   15,411x = 31,550 × 31,550
4. Step 4: Simplify right side
   15,411x = 995,402,500
5. Step 5: Solve for x
   x = 995,402,500/15,411
6. Step 6: Final answer
   x = 64,590.39