Finding the Third Proportional to 10,036,908 and 21,368,520

Step by Step Solution

1. Step 1: Write the proportion equation
   10,036,908 : 21,368,520 = 21,368,520 : x
2. Step 2: Convert to fraction form
   10,036,908/21,368,520 = 21,368,520/x
3. Step 3: Cross multiply
   10,036,908x = 21,368,520 × 21,368,520
4. Step 4: Simplify right side
   10,036,908x = 456,613,646,990,400
5. Step 5: Solve for x
   x = 456,613,646,990,400/10,036,908
6. Step 6: Final answer
   x = 45,493,457.45