Finding the Third Proportional to 166,388,935.50 and 259,656,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,388,935.50 : 259,656,280.50 = 259,656,280.50 : x
2. Step 2: Convert to fraction form
   166,388,935.50/259,656,280.50 = 259,656,280.50/x
3. Step 3: Cross multiply
   166,388,935.50x = 259,656,280.50 × 259,656,280.50
4. Step 4: Simplify right side
   166,388,935.50x = 67,421,384,003,094,680
5. Step 5: Solve for x
   x = 67,421,384,003,094,680/166,388,935.50
6. Step 6: Final answer
   x = 405,203,529.91