Finding the Third Proportional to 4,397,028 and 9,688,540

Step by Step Solution

1. Step 1: Write the proportion equation
   4,397,028 : 9,688,540 = 9,688,540 : x
2. Step 2: Convert to fraction form
   4,397,028/9,688,540 = 9,688,540/x
3. Step 3: Cross multiply
   4,397,028x = 9,688,540 × 9,688,540
4. Step 4: Simplify right side
   4,397,028x = 93,867,807,331,600
5. Step 5: Solve for x
   x = 93,867,807,331,600/4,397,028
6. Step 6: Final answer
   x = 21,348,012.19