Finding the Third Proportional to 144,311,624 and 315,085,194

Step by Step Solution

1. Step 1: Write the proportion equation
   144,311,624 : 315,085,194 = 315,085,194 : x
2. Step 2: Convert to fraction form
   144,311,624/315,085,194 = 315,085,194/x
3. Step 3: Cross multiply
   144,311,624x = 315,085,194 × 315,085,194
4. Step 4: Simplify right side
   144,311,624x = 99,278,679,478,017,632
5. Step 5: Solve for x
   x = 99,278,679,478,017,632/144,311,624
6. Step 6: Final answer
   x = 687,946,519.67