Finding the Third Proportional to 339,291 and 706,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,291 : 706,486.50 = 706,486.50 : x
2. Step 2: Convert to fraction form
   339,291/706,486.50 = 706,486.50/x
3. Step 3: Cross multiply
   339,291x = 706,486.50 × 706,486.50
4. Step 4: Simplify right side
   339,291x = 499,123,174,682.25
5. Step 5: Solve for x
   x = 499,123,174,682.25/339,291
6. Step 6: Final answer
   x = 1,471,076.97