Finding the Third Proportional to 287,878.50 and 608,973

Step by Step Solution

1. Step 1: Write the proportion equation
   287,878.50 : 608,973 = 608,973 : x
2. Step 2: Convert to fraction form
   287,878.50/608,973 = 608,973/x
3. Step 3: Cross multiply
   287,878.50x = 608,973 × 608,973
4. Step 4: Simplify right side
   287,878.50x = 370,848,114,729
5. Step 5: Solve for x
   x = 370,848,114,729/287,878.50
6. Step 6: Final answer
   x = 1,288,210.53