Finding the Third Proportional to 308,300 and 672,624

Step by Step Solution

1. Step 1: Write the proportion equation
   308,300 : 672,624 = 672,624 : x
2. Step 2: Convert to fraction form
   308,300/672,624 = 672,624/x
3. Step 3: Cross multiply
   308,300x = 672,624 × 672,624
4. Step 4: Simplify right side
   308,300x = 452,423,045,376
5. Step 5: Solve for x
   x = 452,423,045,376/308,300
6. Step 6: Final answer
   x = 1,467,476.63