Finding the Third Proportional to 431,190 and 907,060.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,190 : 907,060.50 = 907,060.50 : x
2. Step 2: Convert to fraction form
   431,190/907,060.50 = 907,060.50/x
3. Step 3: Cross multiply
   431,190x = 907,060.50 × 907,060.50
4. Step 4: Simplify right side
   431,190x = 822,758,750,660.25
5. Step 5: Solve for x
   x = 822,758,750,660.25/431,190
6. Step 6: Final answer
   x = 1,908,111.85