Finding the Third Proportional to 171,345,730 and 261,036,116

Step by Step Solution

1. Step 1: Write the proportion equation
   171,345,730 : 261,036,116 = 261,036,116 : x
2. Step 2: Convert to fraction form
   171,345,730/261,036,116 = 261,036,116/x
3. Step 3: Cross multiply
   171,345,730x = 261,036,116 × 261,036,116
4. Step 4: Simplify right side
   171,345,730x = 68,139,853,856,365,456
5. Step 5: Solve for x
   x = 68,139,853,856,365,456/171,345,730
6. Step 6: Final answer
   x = 397,674,653.79