Finding the Third Proportional to 139,083.75 and 300,341.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,083.75 : 300,341.25 = 300,341.25 : x
2. Step 2: Convert to fraction form
   139,083.75/300,341.25 = 300,341.25/x
3. Step 3: Cross multiply
   139,083.75x = 300,341.25 × 300,341.25
4. Step 4: Simplify right side
   139,083.75x = 90,204,866,451.56
5. Step 5: Solve for x
   x = 90,204,866,451.56/139,083.75
6. Step 6: Final answer
   x = 648,565.10