Finding the Third Proportional to 431,222 and 907,141

Step by Step Solution

1. Step 1: Write the proportion equation
   431,222 : 907,141 = 907,141 : x
2. Step 2: Convert to fraction form
   431,222/907,141 = 907,141/x
3. Step 3: Cross multiply
   431,222x = 907,141 × 907,141
4. Step 4: Simplify right side
   431,222x = 822,904,793,881
5. Step 5: Solve for x
   x = 822,904,793,881/431,222
6. Step 6: Final answer
   x = 1,908,308.93