Finding the Third Proportional to 399,290.50 and 603,094

Step by Step Solution

1. Step 1: Write the proportion equation
   399,290.50 : 603,094 = 603,094 : x
2. Step 2: Convert to fraction form
   399,290.50/603,094 = 603,094/x
3. Step 3: Cross multiply
   399,290.50x = 603,094 × 603,094
4. Step 4: Simplify right side
   399,290.50x = 363,722,372,836
5. Step 5: Solve for x
   x = 363,722,372,836/399,290.50
6. Step 6: Final answer
   x = 910,921.68