Finding the Third Proportional to 5,199,185 and 10,555,835

Step by Step Solution

1. Step 1: Write the proportion equation
   5,199,185 : 10,555,835 = 10,555,835 : x
2. Step 2: Convert to fraction form
   5,199,185/10,555,835 = 10,555,835/x
3. Step 3: Cross multiply
   5,199,185x = 10,555,835 × 10,555,835
4. Step 4: Simplify right side
   5,199,185x = 111,425,652,547,225
5. Step 5: Solve for x
   x = 111,425,652,547,225/5,199,185
6. Step 6: Final answer
   x = 21,431,369.06