Finding the Third Proportional to 301,930.50 and 712,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,930.50 : 712,816.50 = 712,816.50 : x
2. Step 2: Convert to fraction form
   301,930.50/712,816.50 = 712,816.50/x
3. Step 3: Cross multiply
   301,930.50x = 712,816.50 × 712,816.50
4. Step 4: Simplify right side
   301,930.50x = 508,107,362,672.25
5. Step 5: Solve for x
   x = 508,107,362,672.25/301,930.50
6. Step 6: Final answer
   x = 1,682,861.99