Finding the Third Proportional to 4,719,144 and 7,287,343

Step by Step Solution

1. Step 1: Write the proportion equation
   4,719,144 : 7,287,343 = 7,287,343 : x
2. Step 2: Convert to fraction form
   4,719,144/7,287,343 = 7,287,343/x
3. Step 3: Cross multiply
   4,719,144x = 7,287,343 × 7,287,343
4. Step 4: Simplify right side
   4,719,144x = 53,105,367,999,649
5. Step 5: Solve for x
   x = 53,105,367,999,649/4,719,144
6. Step 6: Final answer
   x = 11,253,178.12