Finding the Third Proportional to 302,854.50 and 455,010

Step by Step Solution

1. Step 1: Write the proportion equation
   302,854.50 : 455,010 = 455,010 : x
2. Step 2: Convert to fraction form
   302,854.50/455,010 = 455,010/x
3. Step 3: Cross multiply
   302,854.50x = 455,010 × 455,010
4. Step 4: Simplify right side
   302,854.50x = 207,034,100,100
5. Step 5: Solve for x
   x = 207,034,100,100/302,854.50
6. Step 6: Final answer
   x = 683,609.13