Finding the Third Proportional to 288,930 and 449,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,930 : 449,134.50 = 449,134.50 : x
2. Step 2: Convert to fraction form
   288,930/449,134.50 = 449,134.50/x
3. Step 3: Cross multiply
   288,930x = 449,134.50 × 449,134.50
4. Step 4: Simplify right side
   288,930x = 201,721,799,090.25
5. Step 5: Solve for x
   x = 201,721,799,090.25/288,930
6. Step 6: Final answer
   x = 698,168.41