Finding the Third Proportional to 301,100.50 and 654,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,100.50 : 654,688.50 = 654,688.50 : x
2. Step 2: Convert to fraction form
   301,100.50/654,688.50 = 654,688.50/x
3. Step 3: Cross multiply
   301,100.50x = 654,688.50 × 654,688.50
4. Step 4: Simplify right side
   301,100.50x = 428,617,032,032.25
5. Step 5: Solve for x
   x = 428,617,032,032.25/301,100.50
6. Step 6: Final answer
   x = 1,423,501.56