Finding the Third Proportional to 173,479.50 and 272,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   173,479.50 : 272,200.50 = 272,200.50 : x
2. Step 2: Convert to fraction form
   173,479.50/272,200.50 = 272,200.50/x
3. Step 3: Cross multiply
   173,479.50x = 272,200.50 × 272,200.50
4. Step 4: Simplify right side
   173,479.50x = 74,093,112,200.25
5. Step 5: Solve for x
   x = 74,093,112,200.25/173,479.50
6. Step 6: Final answer
   x = 427,100.10