Finding the Third Proportional to 171,345,768.50 and 261,036,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,345,768.50 : 261,036,158.50 = 261,036,158.50 : x
2. Step 2: Convert to fraction form
   171,345,768.50/261,036,158.50 = 261,036,158.50/x
3. Step 3: Cross multiply
   171,345,768.50x = 261,036,158.50 × 261,036,158.50
4. Step 4: Simplify right side
   171,345,768.50x = 68,139,876,044,437,120
5. Step 5: Solve for x
   x = 68,139,876,044,437,120/171,345,768.50
6. Step 6: Final answer
   x = 397,674,693.93