Finding the Third Proportional to 4,558,842 and 7,218,828

Step by Step Solution

1. Step 1: Write the proportion equation
   4,558,842 : 7,218,828 = 7,218,828 : x
2. Step 2: Convert to fraction form
   4,558,842/7,218,828 = 7,218,828/x
3. Step 3: Cross multiply
   4,558,842x = 7,218,828 × 7,218,828
4. Step 4: Simplify right side
   4,558,842x = 52,111,477,693,584
5. Step 5: Solve for x
   x = 52,111,477,693,584/4,558,842
6. Step 6: Final answer
   x = 11,430,858.47