Finding the Third Proportional to 186,670.50 and 287,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,670.50 : 287,089.50 = 287,089.50 : x
2. Step 2: Convert to fraction form
   186,670.50/287,089.50 = 287,089.50/x
3. Step 3: Cross multiply
   186,670.50x = 287,089.50 × 287,089.50
4. Step 4: Simplify right side
   186,670.50x = 82,420,381,010.25
5. Step 5: Solve for x
   x = 82,420,381,010.25/186,670.50
6. Step 6: Final answer
   x = 441,528.69