Finding the Third Proportional to 428,960.50 and 914,918.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,960.50 : 914,918.50 = 914,918.50 : x
2. Step 2: Convert to fraction form
   428,960.50/914,918.50 = 914,918.50/x
3. Step 3: Cross multiply
   428,960.50x = 914,918.50 × 914,918.50
4. Step 4: Simplify right side
   428,960.50x = 837,075,861,642.25
5. Step 5: Solve for x
   x = 837,075,861,642.25/428,960.50
6. Step 6: Final answer
   x = 1,951,405.46