Finding the Third Proportional to 189,340 and 408,204.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,340 : 408,204.50 = 408,204.50 : x
2. Step 2: Convert to fraction form
   189,340/408,204.50 = 408,204.50/x
3. Step 3: Cross multiply
   189,340x = 408,204.50 × 408,204.50
4. Step 4: Simplify right side
   189,340x = 166,630,913,820.25
5. Step 5: Solve for x
   x = 166,630,913,820.25/189,340
6. Step 6: Final answer
   x = 880,061.87