Finding the Third Proportional to 442,830 and 704,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,830 : 704,972.50 = 704,972.50 : x
2. Step 2: Convert to fraction form
   442,830/704,972.50 = 704,972.50/x
3. Step 3: Cross multiply
   442,830x = 704,972.50 × 704,972.50
4. Step 4: Simplify right side
   442,830x = 496,986,225,756.25
5. Step 5: Solve for x
   x = 496,986,225,756.25/442,830
6. Step 6: Final answer
   x = 1,122,295.75