Finding the Third Proportional to 10,036,872 and 21,368,448

Step by Step Solution

1. Step 1: Write the proportion equation
   10,036,872 : 21,368,448 = 21,368,448 : x
2. Step 2: Convert to fraction form
   10,036,872/21,368,448 = 21,368,448/x
3. Step 3: Cross multiply
   10,036,872x = 21,368,448 × 21,368,448
4. Step 4: Simplify right side
   10,036,872x = 456,610,569,928,704
5. Step 5: Solve for x
   x = 456,610,569,928,704/10,036,872
6. Step 6: Final answer
   x = 45,493,314.05