Finding the Third Proportional to 308,310 and 672,500

Step by Step Solution

1. Step 1: Write the proportion equation
   308,310 : 672,500 = 672,500 : x
2. Step 2: Convert to fraction form
   308,310/672,500 = 672,500/x
3. Step 3: Cross multiply
   308,310x = 672,500 × 672,500
4. Step 4: Simplify right side
   308,310x = 452,256,250,000
5. Step 5: Solve for x
   x = 452,256,250,000/308,310
6. Step 6: Final answer
   x = 1,466,888.03