Finding the Third Proportional to 12,739,728,222.50 and 19,109,593,974

Step by Step Solution

1. Step 1: Write the proportion equation
   12,739,728,222.50 : 19,109,593,974 = 19,109,593,974 : x
2. Step 2: Convert to fraction form
   12,739,728,222.50/19,109,593,974 = 19,109,593,974/x
3. Step 3: Cross multiply
   12,739,728,222.50x = 19,109,593,974 × 19,109,593,974
4. Step 4: Simplify right side
   12,739,728,222.50x = 365,176,581,851,137,114,112
5. Step 5: Solve for x
   x = 365,176,581,851,137,114,112/12,739,728,222.50
6. Step 6: Final answer
   x = 28,664,393,421.38