Finding the Third Proportional to 302,805 and 657,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,805 : 657,124.50 = 657,124.50 : x
2. Step 2: Convert to fraction form
   302,805/657,124.50 = 657,124.50/x
3. Step 3: Cross multiply
   302,805x = 657,124.50 × 657,124.50
4. Step 4: Simplify right side
   302,805x = 431,812,608,500.25
5. Step 5: Solve for x
   x = 431,812,608,500.25/302,805
6. Step 6: Final answer
   x = 1,426,041.87