Finding the Third Proportional to 208,154 and 431,076

Step by Step Solution

1. Step 1: Write the proportion equation
   208,154 : 431,076 = 431,076 : x
2. Step 2: Convert to fraction form
   208,154/431,076 = 431,076/x
3. Step 3: Cross multiply
   208,154x = 431,076 × 431,076
4. Step 4: Simplify right side
   208,154x = 185,826,517,776
5. Step 5: Solve for x
   x = 185,826,517,776/208,154
6. Step 6: Final answer
   x = 892,735.75