Finding the Third Proportional to 308,298 and 672,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,298 : 672,619.50 = 672,619.50 : x
2. Step 2: Convert to fraction form
   308,298/672,619.50 = 672,619.50/x
3. Step 3: Cross multiply
   308,298x = 672,619.50 × 672,619.50
4. Step 4: Simplify right side
   308,298x = 452,416,991,780.25
5. Step 5: Solve for x
   x = 452,416,991,780.25/308,298
6. Step 6: Final answer
   x = 1,467,466.52