Finding the Third Proportional to 10,990,584 and 16,812,243

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990,584 : 16,812,243 = 16,812,243 : x
2. Step 2: Convert to fraction form
   10,990,584/16,812,243 = 16,812,243/x
3. Step 3: Cross multiply
   10,990,584x = 16,812,243 × 16,812,243
4. Step 4: Simplify right side
   10,990,584x = 282,651,514,691,049
5. Step 5: Solve for x
   x = 282,651,514,691,049/10,990,584
6. Step 6: Final answer
   x = 25,717,606.52