Finding the Third Proportional to 4,988,740 and 7,775,142

Step by Step Solution

1. Step 1: Write the proportion equation
   4,988,740 : 7,775,142 = 7,775,142 : x
2. Step 2: Convert to fraction form
   4,988,740/7,775,142 = 7,775,142/x
3. Step 3: Cross multiply
   4,988,740x = 7,775,142 × 7,775,142
4. Step 4: Simplify right side
   4,988,740x = 60,452,833,120,164
5. Step 5: Solve for x
   x = 60,452,833,120,164/4,988,740
6. Step 6: Final answer
   x = 12,117,856.04