Finding the Third Proportional to 420,229.50 and 630,774

Step by Step Solution

1. Step 1: Write the proportion equation
   420,229.50 : 630,774 = 630,774 : x
2. Step 2: Convert to fraction form
   420,229.50/630,774 = 630,774/x
3. Step 3: Cross multiply
   420,229.50x = 630,774 × 630,774
4. Step 4: Simplify right side
   420,229.50x = 397,875,839,076
5. Step 5: Solve for x
   x = 397,875,839,076/420,229.50
6. Step 6: Final answer
   x = 946,806.06