Finding the Third Proportional to 431,191 and 907,063

Step by Step Solution

1. Step 1: Write the proportion equation
   431,191 : 907,063 = 907,063 : x
2. Step 2: Convert to fraction form
   431,191/907,063 = 907,063/x
3. Step 3: Cross multiply
   431,191x = 907,063 × 907,063
4. Step 4: Simplify right side
   431,191x = 822,763,285,969
5. Step 5: Solve for x
   x = 822,763,285,969/431,191
6. Step 6: Final answer
   x = 1,908,117.95