Finding the Third Proportional to 262,189.50 and 418,260

Step by Step Solution

1. Step 1: Write the proportion equation
   262,189.50 : 418,260 = 418,260 : x
2. Step 2: Convert to fraction form
   262,189.50/418,260 = 418,260/x
3. Step 3: Cross multiply
   262,189.50x = 418,260 × 418,260
4. Step 4: Simplify right side
   262,189.50x = 174,941,427,600
5. Step 5: Solve for x
   x = 174,941,427,600/262,189.50
6. Step 6: Final answer
   x = 667,232.77