Finding the Third Proportional to 290,855.25 and 608,062.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,855.25 : 608,062.50 = 608,062.50 : x
2. Step 2: Convert to fraction form
   290,855.25/608,062.50 = 608,062.50/x
3. Step 3: Cross multiply
   290,855.25x = 608,062.50 × 608,062.50
4. Step 4: Simplify right side
   290,855.25x = 369,740,003,906.25
5. Step 5: Solve for x
   x = 369,740,003,906.25/290,855.25
6. Step 6: Final answer
   x = 1,271,216.54