Finding the Third Proportional to 5,290,968 and 7,915,858

Step by Step Solution

1. Step 1: Write the proportion equation
   5,290,968 : 7,915,858 = 7,915,858 : x
2. Step 2: Convert to fraction form
   5,290,968/7,915,858 = 7,915,858/x
3. Step 3: Cross multiply
   5,290,968x = 7,915,858 × 7,915,858
4. Step 4: Simplify right side
   5,290,968x = 62,660,807,876,164
5. Step 5: Solve for x
   x = 62,660,807,876,164/5,290,968
6. Step 6: Final answer
   x = 11,842,976.16