Finding the Third Proportional to 677,991 and 919,756.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,991 : 919,756.50 = 919,756.50 : x
2. Step 2: Convert to fraction form
   677,991/919,756.50 = 919,756.50/x
3. Step 3: Cross multiply
   677,991x = 919,756.50 × 919,756.50
4. Step 4: Simplify right side
   677,991x = 845,952,019,292.25
5. Step 5: Solve for x
   x = 845,952,019,292.25/677,991
6. Step 6: Final answer
   x = 1,247,733.41