Finding the Third Proportional to 7,470,278 and 10,991,800

Step by Step Solution

1. Step 1: Write the proportion equation
   7,470,278 : 10,991,800 = 10,991,800 : x
2. Step 2: Convert to fraction form
   7,470,278/10,991,800 = 10,991,800/x
3. Step 3: Cross multiply
   7,470,278x = 10,991,800 × 10,991,800
4. Step 4: Simplify right side
   7,470,278x = 120,819,667,240,000
5. Step 5: Solve for x
   x = 120,819,667,240,000/7,470,278
6. Step 6: Final answer
   x = 16,173,383.00