Finding the Third Proportional to 191,878.88 and 287,818.31

Step by Step Solution

1. Step 1: Write the proportion equation
   191,878.88 : 287,818.31 = 287,818.31 : x
2. Step 2: Convert to fraction form
   191,878.88/287,818.31 = 287,818.31/x
3. Step 3: Cross multiply
   191,878.88x = 287,818.31 × 287,818.31
4. Step 4: Simplify right side
   191,878.88x = 82,839,381,010.35
5. Step 5: Solve for x
   x = 82,839,381,010.35/191,878.88
6. Step 6: Final answer
   x = 431,727.47