Finding the Third Proportional to 4,884,213 and 7,179,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,884,213 : 7,179,978 = 7,179,978 : x
2. Step 2: Convert to fraction form
   4,884,213/7,179,978 = 7,179,978/x
3. Step 3: Cross multiply
   4,884,213x = 7,179,978 × 7,179,978
4. Step 4: Simplify right side
   4,884,213x = 51,552,084,080,484
5. Step 5: Solve for x
   x = 51,552,084,080,484/4,884,213
6. Step 6: Final answer
   x = 10,554,839.46