Finding the Third Proportional to 4,972,920 and 7,428,702

Step by Step Solution

1. Step 1: Write the proportion equation
   4,972,920 : 7,428,702 = 7,428,702 : x
2. Step 2: Convert to fraction form
   4,972,920/7,428,702 = 7,428,702/x
3. Step 3: Cross multiply
   4,972,920x = 7,428,702 × 7,428,702
4. Step 4: Simplify right side
   4,972,920x = 55,185,613,404,804
5. Step 5: Solve for x
   x = 55,185,613,404,804/4,972,920
6. Step 6: Final answer
   x = 11,097,225.25