Finding the Third Proportional to 140,460.75 and 300,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,460.75 : 300,604.50 = 300,604.50 : x
2. Step 2: Convert to fraction form
   140,460.75/300,604.50 = 300,604.50/x
3. Step 3: Cross multiply
   140,460.75x = 300,604.50 × 300,604.50
4. Step 4: Simplify right side
   140,460.75x = 90,363,065,420.25
5. Step 5: Solve for x
   x = 90,363,065,420.25/140,460.75
6. Step 6: Final answer
   x = 643,333.21