Finding the Third Proportional to 171,345,864 and 261,036,300

Step by Step Solution

1. Step 1: Write the proportion equation
   171,345,864 : 261,036,300 = 261,036,300 : x
2. Step 2: Convert to fraction form
   171,345,864/261,036,300 = 261,036,300/x
3. Step 3: Cross multiply
   171,345,864x = 261,036,300 × 261,036,300
4. Step 4: Simplify right side
   171,345,864x = 68,139,949,917,690,000
5. Step 5: Solve for x
   x = 68,139,949,917,690,000/171,345,864
6. Step 6: Final answer
   x = 397,674,903.42