Finding the Third Proportional to 55,609,858 and 121,105,870

Step by Step Solution

1. Step 1: Write the proportion equation
   55,609,858 : 121,105,870 = 121,105,870 : x
2. Step 2: Convert to fraction form
   55,609,858/121,105,870 = 121,105,870/x
3. Step 3: Cross multiply
   55,609,858x = 121,105,870 × 121,105,870
4. Step 4: Simplify right side
   55,609,858x = 14,666,631,748,456,900
5. Step 5: Solve for x
   x = 14,666,631,748,456,900/55,609,858
6. Step 6: Final answer
   x = 263,741,578.85