Finding the Third Proportional to 431,230.50 and 907,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,230.50 : 907,144.50 = 907,144.50 : x
2. Step 2: Convert to fraction form
   431,230.50/907,144.50 = 907,144.50/x
3. Step 3: Cross multiply
   431,230.50x = 907,144.50 × 907,144.50
4. Step 4: Simplify right side
   431,230.50x = 822,911,143,880.25
5. Step 5: Solve for x
   x = 822,911,143,880.25/431,230.50
6. Step 6: Final answer
   x = 1,908,286.04