Finding the Third Proportional to 124,740 and 300,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,740 : 300,739.50 = 300,739.50 : x
2. Step 2: Convert to fraction form
   124,740/300,739.50 = 300,739.50/x
3. Step 3: Cross multiply
   124,740x = 300,739.50 × 300,739.50
4. Step 4: Simplify right side
   124,740x = 90,444,246,860.25
5. Step 5: Solve for x
   x = 90,444,246,860.25/124,740
6. Step 6: Final answer
   x = 725,062.10