Finding the Third Proportional to 31,430 and 43,251

Step by Step Solution

1. Step 1: Write the proportion equation
   31,430 : 43,251 = 43,251 : x
2. Step 2: Convert to fraction form
   31,430/43,251 = 43,251/x
3. Step 3: Cross multiply
   31,430x = 43,251 × 43,251
4. Step 4: Simplify right side
   31,430x = 1,870,649,001
5. Step 5: Solve for x
   x = 1,870,649,001/31,430
6. Step 6: Final answer
   x = 59,517.94