Finding the Third Proportional to 140,280.75 and 300,501

Step by Step Solution

1. Step 1: Write the proportion equation
   140,280.75 : 300,501 = 300,501 : x
2. Step 2: Convert to fraction form
   140,280.75/300,501 = 300,501/x
3. Step 3: Cross multiply
   140,280.75x = 300,501 × 300,501
4. Step 4: Simplify right side
   140,280.75x = 90,300,851,001
5. Step 5: Solve for x
   x = 90,300,851,001/140,280.75
6. Step 6: Final answer
   x = 643,715.20