Finding the Third Proportional to 11,763,128 and 17,990,736

Step by Step Solution

1. Step 1: Write the proportion equation
   11,763,128 : 17,990,736 = 17,990,736 : x
2. Step 2: Convert to fraction form
   11,763,128/17,990,736 = 17,990,736/x
3. Step 3: Cross multiply
   11,763,128x = 17,990,736 × 17,990,736
4. Step 4: Simplify right side
   11,763,128x = 323,666,581,821,696
5. Step 5: Solve for x
   x = 323,666,581,821,696/11,763,128
6. Step 6: Final answer
   x = 27,515,349.81