Finding the Third Proportional to 308,208 and 662,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,208 : 662,248.50 = 662,248.50 : x
2. Step 2: Convert to fraction form
   308,208/662,248.50 = 662,248.50/x
3. Step 3: Cross multiply
   308,208x = 662,248.50 × 662,248.50
4. Step 4: Simplify right side
   308,208x = 438,573,075,752.25
5. Step 5: Solve for x
   x = 438,573,075,752.25/308,208
6. Step 6: Final answer
   x = 1,422,977.59