Finding the Third Proportional to 175,128.50 and 277,354

Step by Step Solution

1. Step 1: Write the proportion equation
   175,128.50 : 277,354 = 277,354 : x
2. Step 2: Convert to fraction form
   175,128.50/277,354 = 277,354/x
3. Step 3: Cross multiply
   175,128.50x = 277,354 × 277,354
4. Step 4: Simplify right side
   175,128.50x = 76,925,241,316
5. Step 5: Solve for x
   x = 76,925,241,316/175,128.50
6. Step 6: Final answer
   x = 439,250.27