Finding the Third Proportional to 431,190.50 and 907,065

Step by Step Solution

1. Step 1: Write the proportion equation
   431,190.50 : 907,065 = 907,065 : x
2. Step 2: Convert to fraction form
   431,190.50/907,065 = 907,065/x
3. Step 3: Cross multiply
   431,190.50x = 907,065 × 907,065
4. Step 4: Simplify right side
   431,190.50x = 822,766,914,225
5. Step 5: Solve for x
   x = 822,766,914,225/431,190.50
6. Step 6: Final answer
   x = 1,908,128.57