Finding the Third Proportional to 3,968,616 and 8,693,940

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,616 : 8,693,940 = 8,693,940 : x
2. Step 2: Convert to fraction form
   3,968,616/8,693,940 = 8,693,940/x
3. Step 3: Cross multiply
   3,968,616x = 8,693,940 × 8,693,940
4. Step 4: Simplify right side
   3,968,616x = 75,584,592,723,600
5. Step 5: Solve for x
   x = 75,584,592,723,600/3,968,616
6. Step 6: Final answer
   x = 19,045,579.80