Finding the Third Proportional to 7,980,288 and 12,382,122

Step by Step Solution

1. Step 1: Write the proportion equation
   7,980,288 : 12,382,122 = 12,382,122 : x
2. Step 2: Convert to fraction form
   7,980,288/12,382,122 = 12,382,122/x
3. Step 3: Cross multiply
   7,980,288x = 12,382,122 × 12,382,122
4. Step 4: Simplify right side
   7,980,288x = 153,316,945,222,884
5. Step 5: Solve for x
   x = 153,316,945,222,884/7,980,288
6. Step 6: Final answer
   x = 19,211,956.41