Finding the Third Proportional to 5,460,890 and 8,479,072

Step by Step Solution

1. Step 1: Write the proportion equation
   5,460,890 : 8,479,072 = 8,479,072 : x
2. Step 2: Convert to fraction form
   5,460,890/8,479,072 = 8,479,072/x
3. Step 3: Cross multiply
   5,460,890x = 8,479,072 × 8,479,072
4. Step 4: Simplify right side
   5,460,890x = 71,894,661,981,184
5. Step 5: Solve for x
   x = 71,894,661,981,184/5,460,890
6. Step 6: Final answer
   x = 13,165,374.51