Finding the Third Proportional to 5,718,885 and 8,915,940

Step by Step Solution

1. Step 1: Write the proportion equation
   5,718,885 : 8,915,940 = 8,915,940 : x
2. Step 2: Convert to fraction form
   5,718,885/8,915,940 = 8,915,940/x
3. Step 3: Cross multiply
   5,718,885x = 8,915,940 × 8,915,940
4. Step 4: Simplify right side
   5,718,885x = 79,493,986,083,600
5. Step 5: Solve for x
   x = 79,493,986,083,600/5,718,885
6. Step 6: Final answer
   x = 13,900,259.59