Finding the Third Proportional to 4,034,658 and 8,706,912

Step by Step Solution

1. Step 1: Write the proportion equation
   4,034,658 : 8,706,912 = 8,706,912 : x
2. Step 2: Convert to fraction form
   4,034,658/8,706,912 = 8,706,912/x
3. Step 3: Cross multiply
   4,034,658x = 8,706,912 × 8,706,912
4. Step 4: Simplify right side
   4,034,658x = 75,810,316,575,744
5. Step 5: Solve for x
   x = 75,810,316,575,744/4,034,658
6. Step 6: Final answer
   x = 18,789,775.14