Finding the Third Proportional to 55,609,872 and 121,105,900

Step by Step Solution

1. Step 1: Write the proportion equation
   55,609,872 : 121,105,900 = 121,105,900 : x
2. Step 2: Convert to fraction form
   55,609,872/121,105,900 = 121,105,900/x
3. Step 3: Cross multiply
   55,609,872x = 121,105,900 × 121,105,900
4. Step 4: Simplify right side
   55,609,872x = 14,666,639,014,810,000
5. Step 5: Solve for x
   x = 14,666,639,014,810,000/55,609,872
6. Step 6: Final answer
   x = 263,741,643.12