Finding the Third Proportional to 199,389 and 430,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,389 : 430,084.50 = 430,084.50 : x
2. Step 2: Convert to fraction form
   199,389/430,084.50 = 430,084.50/x
3. Step 3: Cross multiply
   199,389x = 430,084.50 × 430,084.50
4. Step 4: Simplify right side
   199,389x = 184,972,677,140.25
5. Step 5: Solve for x
   x = 184,972,677,140.25/199,389
6. Step 6: Final answer
   x = 927,697.50