Finding the Third Proportional to 128,101.50 and 281,151

Step by Step Solution

1. Step 1: Write the proportion equation
   128,101.50 : 281,151 = 281,151 : x
2. Step 2: Convert to fraction form
   128,101.50/281,151 = 281,151/x
3. Step 3: Cross multiply
   128,101.50x = 281,151 × 281,151
4. Step 4: Simplify right side
   128,101.50x = 79,045,884,801
5. Step 5: Solve for x
   x = 79,045,884,801/128,101.50
6. Step 6: Final answer
   x = 617,056.67