Finding the Third Proportional to 4,112,136 and 8,910,720

Step by Step Solution

1. Step 1: Write the proportion equation
   4,112,136 : 8,910,720 = 8,910,720 : x
2. Step 2: Convert to fraction form
   4,112,136/8,910,720 = 8,910,720/x
3. Step 3: Cross multiply
   4,112,136x = 8,910,720 × 8,910,720
4. Step 4: Simplify right side
   4,112,136x = 79,400,930,918,400
5. Step 5: Solve for x
   x = 79,400,930,918,400/4,112,136
6. Step 6: Final answer
   x = 19,308,926.29