Finding the Third Proportional to 3,918,158,638 and 8,525,038,244

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918,158,638 : 8,525,038,244 = 8,525,038,244 : x
2. Step 2: Convert to fraction form
   3,918,158,638/8,525,038,244 = 8,525,038,244/x
3. Step 3: Cross multiply
   3,918,158,638x = 8,525,038,244 × 8,525,038,244
4. Step 4: Simplify right side
   3,918,158,638x = 72,676,277,061,662,605,312
5. Step 5: Solve for x
   x = 72,676,277,061,662,605,312/3,918,158,638
6. Step 6: Final answer
   x = 18,548,579,518.15