Finding the Third Proportional to 3,333,316 and 7,172,478

Step by Step Solution

1. Step 1: Write the proportion equation
   3,333,316 : 7,172,478 = 7,172,478 : x
2. Step 2: Convert to fraction form
   3,333,316/7,172,478 = 7,172,478/x
3. Step 3: Cross multiply
   3,333,316x = 7,172,478 × 7,172,478
4. Step 4: Simplify right side
   3,333,316x = 51,444,440,660,484
5. Step 5: Solve for x
   x = 51,444,440,660,484/3,333,316
6. Step 6: Final answer
   x = 15,433,412.45