Finding the Third Proportional to 5,178,288 and 7,767,437

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,288 : 7,767,437 = 7,767,437 : x
2. Step 2: Convert to fraction form
   5,178,288/7,767,437 = 7,767,437/x
3. Step 3: Cross multiply
   5,178,288x = 7,767,437 × 7,767,437
4. Step 4: Simplify right side
   5,178,288x = 60,333,077,548,969
5. Step 5: Solve for x
   x = 60,333,077,548,969/5,178,288
6. Step 6: Final answer
   x = 11,651,163.00