Finding the Third Proportional to 191,888 and 287,833

Step by Step Solution

1. Step 1: Write the proportion equation
   191,888 : 287,833 = 287,833 : x
2. Step 2: Convert to fraction form
   191,888/287,833 = 287,833/x
3. Step 3: Cross multiply
   191,888x = 287,833 × 287,833
4. Step 4: Simplify right side
   191,888x = 82,847,835,889
5. Step 5: Solve for x
   x = 82,847,835,889/191,888
6. Step 6: Final answer
   x = 431,751.00