Finding the Third Proportional to 302,808 and 657,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,808 : 657,130.50 = 657,130.50 : x
2. Step 2: Convert to fraction form
   302,808/657,130.50 = 657,130.50/x
3. Step 3: Cross multiply
   302,808x = 657,130.50 × 657,130.50
4. Step 4: Simplify right side
   302,808x = 431,820,494,030.25
5. Step 5: Solve for x
   x = 431,820,494,030.25/302,808
6. Step 6: Final answer
   x = 1,426,053.78