Finding the Third Proportional to 431,178 and 907,048

Step by Step Solution

1. Step 1: Write the proportion equation
   431,178 : 907,048 = 907,048 : x
2. Step 2: Convert to fraction form
   431,178/907,048 = 907,048/x
3. Step 3: Cross multiply
   431,178x = 907,048 × 907,048
4. Step 4: Simplify right side
   431,178x = 822,736,074,304
5. Step 5: Solve for x
   x = 822,736,074,304/431,178
6. Step 6: Final answer
   x = 1,908,112.37