Finding the Third Proportional to 8,210,404 and 12,743,910

Step by Step Solution

1. Step 1: Write the proportion equation
   8,210,404 : 12,743,910 = 12,743,910 : x
2. Step 2: Convert to fraction form
   8,210,404/12,743,910 = 12,743,910/x
3. Step 3: Cross multiply
   8,210,404x = 12,743,910 × 12,743,910
4. Step 4: Simplify right side
   8,210,404x = 162,407,242,088,100
5. Step 5: Solve for x
   x = 162,407,242,088,100/8,210,404
6. Step 6: Final answer
   x = 19,780,663.91