Finding the Third Proportional to 305,297 and 449,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,297 : 449,111.50 = 449,111.50 : x
2. Step 2: Convert to fraction form
   305,297/449,111.50 = 449,111.50/x
3. Step 3: Cross multiply
   305,297x = 449,111.50 × 449,111.50
4. Step 4: Simplify right side
   305,297x = 201,701,139,432.25
5. Step 5: Solve for x
   x = 201,701,139,432.25/305,297
6. Step 6: Final answer
   x = 660,671.87