Finding the Third Proportional to 10,147,708 and 21,357,812

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147,708 : 21,357,812 = 21,357,812 : x
2. Step 2: Convert to fraction form
   10,147,708/21,357,812 = 21,357,812/x
3. Step 3: Cross multiply
   10,147,708x = 21,357,812 × 21,357,812
4. Step 4: Simplify right side
   10,147,708x = 456,156,133,427,344
5. Step 5: Solve for x
   x = 456,156,133,427,344/10,147,708
6. Step 6: Final answer
   x = 44,951,641.63