Finding the Third Proportional to 5,397,221 and 7,718,090

Step by Step Solution

1. Step 1: Write the proportion equation
   5,397,221 : 7,718,090 = 7,718,090 : x
2. Step 2: Convert to fraction form
   5,397,221/7,718,090 = 7,718,090/x
3. Step 3: Cross multiply
   5,397,221x = 7,718,090 × 7,718,090
4. Step 4: Simplify right side
   5,397,221x = 59,568,913,248,100
5. Step 5: Solve for x
   x = 59,568,913,248,100/5,397,221
6. Step 6: Final answer
   x = 11,036,960.18