Finding the Third Proportional to 3,118,857,553 and 7,355,066,970.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118,857,553 : 7,355,066,970.50 = 7,355,066,970.50 : x
2. Step 2: Convert to fraction form
   3,118,857,553/7,355,066,970.50 = 7,355,066,970.50/x
3. Step 3: Cross multiply
   3,118,857,553x = 7,355,066,970.50 × 7,355,066,970.50
4. Step 4: Simplify right side
   3,118,857,553x = 54,097,010,140,540,051,456
5. Step 5: Solve for x
   x = 54,097,010,140,540,051,456/3,118,857,553
6. Step 6: Final answer
   x = 17,345,136,551.20