Finding the Third Proportional to 559,017 and 790,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   559,017 : 790,249.50 = 790,249.50 : x
2. Step 2: Convert to fraction form
   559,017/790,249.50 = 790,249.50/x
3. Step 3: Cross multiply
   559,017x = 790,249.50 × 790,249.50
4. Step 4: Simplify right side
   559,017x = 624,494,272,250.25
5. Step 5: Solve for x
   x = 624,494,272,250.25/559,017
6. Step 6: Final answer
   x = 1,117,129.30