Finding the Third Proportional to 99,743,920 and 218,274,804

Step by Step Solution

1. Step 1: Write the proportion equation
   99,743,920 : 218,274,804 = 218,274,804 : x
2. Step 2: Convert to fraction form
   99,743,920/218,274,804 = 218,274,804/x
3. Step 3: Cross multiply
   99,743,920x = 218,274,804 × 218,274,804
4. Step 4: Simplify right side
   99,743,920x = 47,643,890,061,238,416
5. Step 5: Solve for x
   x = 47,643,890,061,238,416/99,743,920
6. Step 6: Final answer
   x = 477,662,097.71