Finding the Third Proportional to 7,470,320 and 10,991,860

Step by Step Solution

1. Step 1: Write the proportion equation
   7,470,320 : 10,991,860 = 10,991,860 : x
2. Step 2: Convert to fraction form
   7,470,320/10,991,860 = 10,991,860/x
3. Step 3: Cross multiply
   7,470,320x = 10,991,860 × 10,991,860
4. Step 4: Simplify right side
   7,470,320x = 120,820,986,259,600
5. Step 5: Solve for x
   x = 120,820,986,259,600/7,470,320
6. Step 6: Final answer
   x = 16,173,468.64