Finding the Third Proportional to 185 and 428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   185 : 428.50 = 428.50 : x
2. Step 2: Convert to fraction form
   185/428.50 = 428.50/x
3. Step 3: Cross multiply
   185x = 428.50 × 428.50
4. Step 4: Simplify right side
   185x = 183,612.25
5. Step 5: Solve for x
   x = 183,612.25/185
6. Step 6: Final answer
   x = 992.50