Finding the Third Proportional to 285,703.50 and 614,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   285,703.50 : 614,404.50 = 614,404.50 : x
2. Step 2: Convert to fraction form
   285,703.50/614,404.50 = 614,404.50/x
3. Step 3: Cross multiply
   285,703.50x = 614,404.50 × 614,404.50
4. Step 4: Simplify right side
   285,703.50x = 377,492,889,620.25
5. Step 5: Solve for x
   x = 377,492,889,620.25/285,703.50
6. Step 6: Final answer
   x = 1,321,274.99