Finding the Third Proportional to 9,700,828 and 21,123,918

Step by Step Solution

1. Step 1: Write the proportion equation
   9,700,828 : 21,123,918 = 21,123,918 : x
2. Step 2: Convert to fraction form
   9,700,828/21,123,918 = 21,123,918/x
3. Step 3: Cross multiply
   9,700,828x = 21,123,918 × 21,123,918
4. Step 4: Simplify right side
   9,700,828x = 446,219,911,670,724
5. Step 5: Solve for x
   x = 446,219,911,670,724/9,700,828
6. Step 6: Final answer
   x = 45,998,126.31