Finding the Third Proportional to 5,178,932 and 7,840,374

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,932 : 7,840,374 = 7,840,374 : x
2. Step 2: Convert to fraction form
   5,178,932/7,840,374 = 7,840,374/x
3. Step 3: Cross multiply
   5,178,932x = 7,840,374 × 7,840,374
4. Step 4: Simplify right side
   5,178,932x = 61,471,464,459,876
5. Step 5: Solve for x
   x = 61,471,464,459,876/5,178,932
6. Step 6: Final answer
   x = 11,869,525.31