Finding the Third Proportional to 428,814 and 914,584.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,814 : 914,584.50 = 914,584.50 : x
2. Step 2: Convert to fraction form
   428,814/914,584.50 = 914,584.50/x
3. Step 3: Cross multiply
   428,814x = 914,584.50 × 914,584.50
4. Step 4: Simplify right side
   428,814x = 836,464,807,640.25
5. Step 5: Solve for x
   x = 836,464,807,640.25/428,814
6. Step 6: Final answer
   x = 1,950,647.15