Finding the Third Proportional to 169,090.50 and 261,078

Step by Step Solution

1. Step 1: Write the proportion equation
   169,090.50 : 261,078 = 261,078 : x
2. Step 2: Convert to fraction form
   169,090.50/261,078 = 261,078/x
3. Step 3: Cross multiply
   169,090.50x = 261,078 × 261,078
4. Step 4: Simplify right side
   169,090.50x = 68,161,722,084
5. Step 5: Solve for x
   x = 68,161,722,084/169,090.50
6. Step 6: Final answer
   x = 403,107.93