Finding the Third Proportional to 191,892 and 287,862

Step by Step Solution

1. Step 1: Write the proportion equation
   191,892 : 287,862 = 287,862 : x
2. Step 2: Convert to fraction form
   191,892/287,862 = 287,862/x
3. Step 3: Cross multiply
   191,892x = 287,862 × 287,862
4. Step 4: Simplify right side
   191,892x = 82,864,531,044
5. Step 5: Solve for x
   x = 82,864,531,044/191,892
6. Step 6: Final answer
   x = 431,829.00