Finding the Third Proportional to 394,090.50 and 611,466

Step by Step Solution

1. Step 1: Write the proportion equation
   394,090.50 : 611,466 = 611,466 : x
2. Step 2: Convert to fraction form
   394,090.50/611,466 = 611,466/x
3. Step 3: Cross multiply
   394,090.50x = 611,466 × 611,466
4. Step 4: Simplify right side
   394,090.50x = 373,890,669,156
5. Step 5: Solve for x
   x = 373,890,669,156/394,090.50
6. Step 6: Final answer
   x = 948,743.17