Finding the Third Proportional to 308,046 and 620,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,046 : 620,671.50 = 620,671.50 : x
2. Step 2: Convert to fraction form
   308,046/620,671.50 = 620,671.50/x
3. Step 3: Cross multiply
   308,046x = 620,671.50 × 620,671.50
4. Step 4: Simplify right side
   308,046x = 385,233,110,912.25
5. Step 5: Solve for x
   x = 385,233,110,912.25/308,046
6. Step 6: Final answer
   x = 1,250,570.08