Finding the Third Proportional to 199,014 and 420,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,014 : 420,490.50 = 420,490.50 : x
2. Step 2: Convert to fraction form
   199,014/420,490.50 = 420,490.50/x
3. Step 3: Cross multiply
   199,014x = 420,490.50 × 420,490.50
4. Step 4: Simplify right side
   199,014x = 176,812,260,590.25
5. Step 5: Solve for x
   x = 176,812,260,590.25/199,014
6. Step 6: Final answer
   x = 888,441.32