Finding the Third Proportional to 171,345,694 and 261,036,064

Step by Step Solution

1. Step 1: Write the proportion equation
   171,345,694 : 261,036,064 = 261,036,064 : x
2. Step 2: Convert to fraction form
   171,345,694/261,036,064 = 261,036,064/x
3. Step 3: Cross multiply
   171,345,694x = 261,036,064 × 261,036,064
4. Step 4: Simplify right side
   171,345,694x = 68,139,826,708,612,096
5. Step 5: Solve for x
   x = 68,139,826,708,612,096/171,345,694
6. Step 6: Final answer
   x = 397,674,578.90