Finding the Third Proportional to 281,938.50 and 431,838

Step by Step Solution

1. Step 1: Write the proportion equation
   281,938.50 : 431,838 = 431,838 : x
2. Step 2: Convert to fraction form
   281,938.50/431,838 = 431,838/x
3. Step 3: Cross multiply
   281,938.50x = 431,838 × 431,838
4. Step 4: Simplify right side
   281,938.50x = 186,484,058,244
5. Step 5: Solve for x
   x = 186,484,058,244/281,938.50
6. Step 6: Final answer
   x = 661,435.24