Finding the Third Proportional to 193,689 and 418,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   193,689 : 418,499.25 = 418,499.25 : x
2. Step 2: Convert to fraction form
   193,689/418,499.25 = 418,499.25/x
3. Step 3: Cross multiply
   193,689x = 418,499.25 × 418,499.25
4. Step 4: Simplify right side
   193,689x = 175,141,622,250.56
5. Step 5: Solve for x
   x = 175,141,622,250.56/193,689
6. Step 6: Final answer
   x = 904,241.45