Finding the Third Proportional to 399,249 and 600,493.50

Step by Step Solution

1. Step 1: Write the proportion equation
   399,249 : 600,493.50 = 600,493.50 : x
2. Step 2: Convert to fraction form
   399,249/600,493.50 = 600,493.50/x
3. Step 3: Cross multiply
   399,249x = 600,493.50 × 600,493.50
4. Step 4: Simplify right side
   399,249x = 360,592,443,542.25
5. Step 5: Solve for x
   x = 360,592,443,542.25/399,249
6. Step 6: Final answer
   x = 903,176.82