Finding the Third Proportional to 141,814.50 and 302,400

Step by Step Solution

1. Step 1: Write the proportion equation
   141,814.50 : 302,400 = 302,400 : x
2. Step 2: Convert to fraction form
   141,814.50/302,400 = 302,400/x
3. Step 3: Cross multiply
   141,814.50x = 302,400 × 302,400
4. Step 4: Simplify right side
   141,814.50x = 91,445,760,000
5. Step 5: Solve for x
   x = 91,445,760,000/141,814.50
6. Step 6: Final answer
   x = 644,826.59