Finding the Third Proportional to 9,939,494 and 21,295,564

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939,494 : 21,295,564 = 21,295,564 : x
2. Step 2: Convert to fraction form
   9,939,494/21,295,564 = 21,295,564/x
3. Step 3: Cross multiply
   9,939,494x = 21,295,564 × 21,295,564
4. Step 4: Simplify right side
   9,939,494x = 453,501,046,078,096
5. Step 5: Solve for x
   x = 453,501,046,078,096/9,939,494
6. Step 6: Final answer
   x = 45,626,170.31