Finding the Third Proportional to 30,890 and 46,470

Step by Step Solution

1. Step 1: Write the proportion equation
   30,890 : 46,470 = 46,470 : x
2. Step 2: Convert to fraction form
   30,890/46,470 = 46,470/x
3. Step 3: Cross multiply
   30,890x = 46,470 × 46,470
4. Step 4: Simplify right side
   30,890x = 2,159,460,900
5. Step 5: Solve for x
   x = 2,159,460,900/30,890
6. Step 6: Final answer
   x = 69,908.09