Finding the Third Proportional to 191,956 and 287,970

Step by Step Solution

1. Step 1: Write the proportion equation
   191,956 : 287,970 = 287,970 : x
2. Step 2: Convert to fraction form
   191,956/287,970 = 287,970/x
3. Step 3: Cross multiply
   191,956x = 287,970 × 287,970
4. Step 4: Simplify right side
   191,956x = 82,926,720,900
5. Step 5: Solve for x
   x = 82,926,720,900/191,956
6. Step 6: Final answer
   x = 432,009.01