Finding the Third Proportional to 4,200,396 and 9,161,016

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,396 : 9,161,016 = 9,161,016 : x
2. Step 2: Convert to fraction form
   4,200,396/9,161,016 = 9,161,016/x
3. Step 3: Cross multiply
   4,200,396x = 9,161,016 × 9,161,016
4. Step 4: Simplify right side
   4,200,396x = 83,924,214,152,256
5. Step 5: Solve for x
   x = 83,924,214,152,256/4,200,396
6. Step 6: Final answer
   x = 19,980,071.92