Finding the Third Proportional to 5,458,573 and 8,561,839

Step by Step Solution

1. Step 1: Write the proportion equation
   5,458,573 : 8,561,839 = 8,561,839 : x
2. Step 2: Convert to fraction form
   5,458,573/8,561,839 = 8,561,839/x
3. Step 3: Cross multiply
   5,458,573x = 8,561,839 × 8,561,839
4. Step 4: Simplify right side
   5,458,573x = 73,305,087,061,921
5. Step 5: Solve for x
   x = 73,305,087,061,921/5,458,573
6. Step 6: Final answer
   x = 13,429,349.95