Finding the Third Proportional to 394,165.50 and 601,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,165.50 : 601,090.50 = 601,090.50 : x
2. Step 2: Convert to fraction form
   394,165.50/601,090.50 = 601,090.50/x
3. Step 3: Cross multiply
   394,165.50x = 601,090.50 × 601,090.50
4. Step 4: Simplify right side
   394,165.50x = 361,309,789,190.25
5. Step 5: Solve for x
   x = 361,309,789,190.25/394,165.50
6. Step 6: Final answer
   x = 916,644.88