Finding the Third Proportional to 701,907 and 775,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   701,907 : 775,717.50 = 775,717.50 : x
2. Step 2: Convert to fraction form
   701,907/775,717.50 = 775,717.50/x
3. Step 3: Cross multiply
   701,907x = 775,717.50 × 775,717.50
4. Step 4: Simplify right side
   701,907x = 601,737,639,806.25
5. Step 5: Solve for x
   x = 601,737,639,806.25/701,907
6. Step 6: Final answer
   x = 857,289.70